Lewis Services is evaluating six investment opportunities (projects). The following table reflects each projects net present value NPV and the respective initial investments required. All of these projects are independent.

Project NPV Investment

I 2,500 2,500

II 4,000 20,000

III 7,500 30,000

IV 8,000 40,000

V 2,000 10,000

VI 2,500 5,000

Lewis has an investment constraint of P50,000. Which combination of projects would represent the optimal investment that should be recommended to Lewis Services management?

a. I, III and VI

b. I, II, III, V, and VI

c. I, II, III, IV, V and VI

d. I, III, V and VI