Cassie is hoping to purchase a 3 bedroom/ 3 bathroom house in her area. The house is on the market for $349,900. Her bank has given her three options for a loan:

15-year mortgage at 4.13% APR, with a required 20% down payment

20-year mortgage at 4.75% APR, with a required 10% down payment

30-year mortgage at 4.99% APR, with a required 20% down payment.

Determine Cassie's best option by finding the monthly payment, the total paid during the mortgage and the total interest paid over the loan.