Consider a Situation Where You Are Buying Books Online

Consider a situation where you are buying books online. The bookseller charges $19.95 as the price per book and $4.95 as the handling cost for up to three books. For every book purchased in addition to three books, there is a handling charge of $1.50. In addition, there is a 7 percent tax on the cost of the books but not on the handlingCharges. Assuming that numBooks represents the number of books you are purchasing, which of the following is the correct algorithm for calculating the total cost of your purchase?

A) Total charge for books = 19.95 * numBooks
Tax on the books = numBooks * .7
If (books <= 3) then handlingCharges = 4.95
Else handlingCharges = 1.50 * numBooks
Total cost of order = total charge for books + tax + handlingCharges
B) Total charge for books = 19.95 * numBooks
Tax on the books = total charge for books * .07
If (books = 3) then handlingCharges = 4.95
Else handlingCharges = 1.50 * numBooks
Total cost of order = total charge for books + tax + handlingCharges
C) Total charge for books = 19.95 * numBooks
Tax on the books = numBooks * .07
If (books < 3) then handlingCharges = 4.95
Else handlingCharges = 4.95 + 1.50 * (numBooks - 3)
Total cost of order = total charge for books + tax + handlingCharges
D) Total charge for books = 19.95 * numBooks
Tax on the books = total charge for books * .07
If (books <= 3) then handlingCharges = 4.95
Else handlingCharges = 4.95 + 1.50 * (numBooks - 3)
Total cost of order = total charge for books + tax + handlingCharges