Let's look at the options one by one , Option A: Revenue by products P = 25*9 = 225 , Q = 40*4 = 160 , R = 91*13 = 1183, S = 159*3 = 477 Revenue of R is the highest. Hence A is not the correct answer. Option B: Revenue by products P = 75*9 = 675, Q = 40*4 = 160 , R = 131*13 = 1703, S = 88*3 = 264 Sum of revenues of P, Q, S =1094 The combined revenue of P, Q, S is less than the revenue from R in 1994. Hence B is not the correct answer. Option C: Revenue by products P = 35*9 = 315, Q = 60*4 = 240, R = 62*13 = 806, S = 140*3 = 420 The cumulative revenue of P and Q = 555 The cumulative revenue of P and Q is more than the revenue of S in 1993. Hence C is the correct answer.