Which two details best develop the themes in the passage?

A. Janyce slowly turned the glossy page of the new book she had been looking at, and she wondered if her father missed her as much as she missed him.

B. Janyce looked at her watch and realized that she had been at the bookstore for almost two hours.

c. "Well, I noticed that you spent an hour and a half in our nature section. I was beginning to think you were going to camp out there overnight."

"Whoa, I don't have $39.95," Janyce said. "I'm sorry. I can't buy this."

"I belong to a bird-watching club here in town, and I'd be glad to have you join us at our next meeting if you're—"

Read the excerpt from the code book. without much hope of a theoretical breakthrough, cryptanalysts have been forced to look for a technological innovation. if there is no obvious way to reduce the number of steps required for factoring, then cryptanalysts need a technology that will perform these steps more quickly. silicon chips will continue to get faster as the years pass, doubling in speed roughly every eighteen months, but this is not enough to make a real impact on the speed of factoring—cryptanalysts require a technology that is billions of times faster than current computers. consequently, cryptanalysts are looking toward a radically new form of computer, the quantum computer. if scientists could build a quantum computer, it would be able to perform calculations with such enormous speed that it would make a modern supercomputer look like a broken abacus. the author’s purpose in this paragraph is to convince the readers to pursue a career in analysis. explain the need for faster technology in cryptanalysis. entertain with interesting stories about supercomputers. argue for more money to develop a quantum computer.