Mark the letter A, B, C, or D to indicate the sentence that is closest in meaningScientists and inventors have made significant contributions to the lives of the common people.

A. Significant contributions have been made by scientists and inventors to the live of the common people.

B. Scientists and inventors had contributed significantly to the lives of the common people.

C. The lives of the common people have been significantly constructed by scientists and inventors.

D. The contributions which scientists and inventors made to the lives of the common people was significant.