Syllogism 4I Given the Following Syllogism

Syllogism 4I
Given the following syllogism:
Games are not fun unless they are challenging, so chess is fun, because chess is challenging.
-After translating Syllogism 4I into standard form, the conclusion is:

A) All challenging games are fun games.
B) All games identical to chess are fun games.
C) All fun games are games identical to chess.
D) All fun games are challenging games.
E) All games identical to chess are challenging games.