阅读短文，并按照题目要求用英语回答问题。
When knowing his son got a C grade in the maths exam, the father was proud and cheerful. This is the tear-jerking moment when a proud father is captured on camera celebrating his son's exam result.
After setting up the hidden camera, the boy calls his father to the kitchen, telling him in a whisper 'I've just got something from school; I need you to come and look at it.' His father, who can be heard shouting from elsewhere in the house, asks 'Has something happened?', to which the naughty teenager, Aria, replies 'Yes! It's really important'. As his nervous-looking father approaches, Aria says 'Come and have a chat with me. Just come in, and read that', he says while passing over a piece of paper displaying the result.
After seeing his son has achieved a C grade in the maths exam, the man asks 'Is that veracious?,' before bursting into tears of joy. The pair hug before the disbelieving dad asks again, 'Are you sure? They've not made a mistake? I can't believe it; I just can't believe it!'
A mere year before the video was filmed, the schoolboy received an F in the subject. He explained，'In England you need a C to basically do anything with your life. I've never been amazing academically and have struggled through school. Neither me or my dad or my teachers thought I was going to get my C, for me it was tough. When I told my Dad who means the world to me this was his reaction...Enjoy'.
Still feeling happy from the news, his delighted father tells him 'You're set for life! You're set for life!'. The teen is seen smiling into the camera at the end of the video, seemingly as thrilled with the result as his emotional father.
小题1:Why does Aria call his father to the kitchen? (no more than 15 words)
小题2:What does the underlined word “veracious” mean in the 3rd paragraph? (one word)
小题3:In Paragraph 3, why does Aria’s father ask those questions? (no more than 10 words)
小题4:What does a C grade mean to a person in England? (no more than 15 words)
小题5:How do you like Aria’s father? Why? (no more than 20 words)
