Have you seen the film “Titanic”, ______ leading actor is world-famous?

A．its               B．it’s             C．which            D．whose

Have you seen the film “Titanic” ________ leading actor is world-famous ?

Have you seen the film “Titanic”, ________ leading actor is world famous?

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Have you seen the film“Titanic”, ________ leading actor is world famous?

[　　]

Have you seen the film“Titanic”, ________ leading actor is world famous?

[　　]