PT 64 S3 Q24

If one wants to succeed, then one should act as thoughone were genuinely ... ...

Which one of the following statements, if true, most strengthens the argument?
(A) Those who convince others that they are capable of succeeding usually have few self-doubts.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Oct 2011 LSAT (PT 64): Logical Reasoning B