Mnemonists Are People Who Display Extraordinary Memory Skills

Mnemonists are people who display extraordinary memory skills. Xhosa would like to learn to remember things better, so she buys a book on improving her memory. Assuming that the book was written by a legitimate memory expert, what can Xhosa expect?

A) Extraordinary memory skills are completely innate, so it's little use for her to try to improve her memory.
B) Experts agree that memory skills can be learned, so if Xhosa works hard she can have an astonishing memory.
C) Xhosa will improve her memory skills only if she relies on rote memorization.
D) Experts disagree on whether exceptional memory skills are influenced by genetics or are completely learned, so without knowing more about Xhosa, we can't say.
E) While unlikely to be able to provide any constructive advice on improving the memory of someone else, reading about the author's childhood may help Xhosa gain a better understanding of what factors led to the mnemonist's superior memory.