If it is assumed that 60 percent of those who receive a questionnaire by mail will respond and 900 responses are needed, what is the minimum number of questionnaires that should be mailed?  Choose the correct option:
A) 1300
B) 1350
C) 1400
D) 1450
E) 1500

Rationale: "let x be the minimum number of questionnaires to be mailed . 0.6 x = 900 x = 1500 the answer is e ."
Answer: E