Choose the sentence that best combines the two given sentences

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Choose the sentence that best combines the two given sentences.

1.     Hurry up! We are going to miss the start of the film.

a.      If you hurry up, we will miss the start of the film.

b.     You don’t hurry up, so we will miss the start of the film.

c.      We won’t miss the start of the film if you hurried up.

d.     We will miss the start of the film if you don’t hurry up.