Exhibit 13­4 Shows Data Gathered by Memo Co

Exhibit 13­4 shows data gathered by Memo Co.as it prepares to purchase personalcomputers for its sales offices.Assume that the personal computers are expected to lastindefinitely, that operating expenses are negligible, and that the price of Memo's product isexpected to remain constant in the future.The marginal rate of return on 60 personalcomputers is closest to

A) 19 percent
B) 24 percent
C) 30 percent
D) 52 percent
E) 520 percent