Answer this question based on the following four statements: 1. lowering the discount rate will increase the present value of an annuity. 2. lowering the payment amount will increase the present value of an annuity. 3. quitting your job to go to university is an example of opportunity cost. 4. spending time on school searching before going to university is an example of opportunity cost. a 1 and 3 are correct. Ob 1 and 4 are correct Oc 2 and 3 are correct O d. 2 and 4 are correct. Oe only 3 is correct