Answer:
A or C (depends on your programming language)
Explanation:
When someone replies to the input, "answer" is set to a string containing their reply -- in this case, 2. intNumberBooks is set to the floating-point value of "answer" (which is actually strange, since "int" implies an integer). So if the user responds with 2, intNumberBooks = 2. moneyDue then is set to the price times the number of books:
moneyDue = 2 * 3.20
So it will print moneyDue of $6.40. Whether the answer is A or C, though, depends on the programming language you're using -- I can't tell whether it will print a space after the $ or not, unfortunately.
