Directions: In this part there are ten incomplete sentences, each with four suggested answers. Choose the one that you think is the best answer. Mark your answer on the ANSWER SHEET by drawing with a pencil a short bar across the corresponding letter in the brackets. A survey was carried out on the death rate of new-born babies in that region, ______ were surprising.
A．as results B．which results C．the results of it D．the results of which