please give me simple answer, i dont need this answer in excel.... on paper answer is recommended...

2. From the table below Year 0 1 2 3 Project A 100 40 40 40 40 Project B -100 50 50 50 4 a) If the opportunity cost of capital is 11% which of these projects is worth pursuing? b) Which project would you choose if the opportunity cost of capital is 16%