The author’s main purpose in mentioning Tucker’s collection of memorabilia ... ...

The author’s main purpose in mentioning Tucker’s collection of memorabilia (lines 13–14) is to
(A) indicate a source from which the author drew information about Tucker’s life and times
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Oct 2012 LSAT (PT 67): Reading Comprehension