This is the only question I am having issues with and need help with an explanation in my Physics assignment?

An elevator must have more power if

Group of answer choices

(A) fewer people are transported upward at the same speed.

(B) the same number of people are transported upward at a slower speed.

(C) any time it moves faster regardless of the number of people on board.

(D) more people are transported upward at the same speed.