Most people find it morally permissible to sacrifice one life to save five lives if the action involves pulling a switch. However, most people find it morally impermissible to sacrifice one life for five lives if the action involves pushing a man from a bridge. Why?

A) An electromechanical device like a switch makes it more likely that the action will be effective.
B) Pushing a man off a bridge evokes more negative emotional responses.
C) People are more likely to be injured if they attempt to push a man off the bridge.
D) People have doubts as to whether or not pushing a man from a bridge really will save five lives.

B) Pushing a man off a bridge evokes more negative emotional responses.