If the Following Facts Were Known,which One Would Provide the Strongest

If the following facts were known,which one would provide the strongest support for thinking that a manager is operating under Theory X assumptions?

A) The manager arranges one-on-one meetings with employees to gauge their sources of dissatisfaction.
B) The manager gives all of his employees a raise in order to increase their morale.
C) The manager introduces tighter rules in order to increase productivity.
D) The manager assumes that there is something wrong with the conditions under which his employees work.
E) The manager surveys employees to determine what would make them work more productively.