The writer wants to expand on the advice offered at the conclusion of the passage to bring the argument to a close. Which of the following versions of the underlined portion of sentence 21 (reproduced below) most effectively accomplishes this goal?

My advice to students contemplating e-readers is to realize that not all reading experiences are the same.

A. same; for immersive experiences, which are crucial to any serious field of study, print is the way to go.

B. same; some books will take you a long time to read, regardless of the medium, whereas others can be dispatched relatively quickly.

C. same; not all e-readers come equipped with the same features, so do some market research before you decide which e-reader is right for you.

D. same; e‑readers are often viewed as being more environmentally friendly, but print books come in handy when there is no access to a power source.

E. same; after all, who knows what impact new inventions will have on reading in the future?