What important idea does emily dickinson want readers to understand after reading "there is no frigate like a book"?

a.
only the poor can truly appreciate the ways in which reading can take us to places we've never been before.

b.
only authors and poets can truly appreciate the wondrous powers of the written word.

c.
real experience teaches us things that cannot be learned from books or poetry.

d.
reading is good for the soul because it can expand our minds and broaden our horizons.