Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is CLOSEST in the meaning to each of the following questions.
They supported us. We couldn’t have finished the task without them.
A.Unless they had helped us, we couldn’t finish the task.
B.But for their help, we could have finished the task.
C.If the hadn’t supported us, we could have finished the task.
D.Had it not been for their assistance, we couldn’t have finished the task.

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