John is considering buying a new car for $20,000 with $4,000 down payment and a 3-year car loan with APR 3.4%. The car's resale value will be $12,000 at the end of 3 years. The dealership also offers a lease option with $1000 security deposit which will be refunded at the end of 3-year lease. The lease monthly payment will be $300 per month and John could also invest his deposit at 1% in a saving account. Should John choose to buy or lease? Please show calculation.