求教一道Powerscore logic bible上的一道题

rx_11

Two things are true of all immoral actions. First, if they are performed in public, they offend public sensibilities. Second, they are accompanied byfeelings of guilt.

If all the statements above are true, then which one of the following must be false?

(A) Some immoral actions that are not performed in public are not accompanied by feelings of guilt.
(B) Immoral actions are wrong solely by virtue of being accompanied by feelings of guilt.
(C) Some actions that offend public sensibilities if they are performed in public are not accompanied by feelings of guilt.
(D) Some actions that are accompanied by feelings of guilt are not immoral, even if they frequently offend public sensibilities.
(E) Every action performed in public that is accompanied by feelings of guilt is immoral.

请问这题为何选A。。我选的是D。。

为何逻辑关系是immoral actions ----------> offend public sensibilities  ..而不是offend public sensibilities ----------> immoral actions

真心求教!  请问怎么看出来的

fjatpku

题干里说了 Being accompanied by feelings of guilt is true of all immoral actions
A选项说some immoral actions are not accompanied by feelings of guilt自然是不对的
if A then B, 当然是A推B了；此处A是immoral actions performed in public,B是offend public sensibilities

rx_11

thx~