Juanito is invited to make an investment , but they offer him 2 different ways of payments (estrategies)

Option A = Initial investment $15,000, payments $3,500, Monthly (20 months) , interest rate 16%

Option B = Initial investment $20,000, payments $2,100, Monthly (22 months) , interest rate 15%

I have this questions:

A)Which would be the Present Value of each investment that Juanito was invited?

B)Which would be the most intelligent option for Juanito?

C)Which investment would give Juanito the best performance (return)?