Javler and Anita Sanchez purchased a home on January 1, 2022, for $600,000 by paying $200,000 down and borrowing the remaining $400,000 with a 7 percent loan secured by the home. The loan requires interest-only payments for the first five years. The Sanchezes would ittemize deductions even if they did not have any deductible interest. The Sanchezes' marginal tax rate is 32 percent. Required: a. What is the after-tax cost of the interest expense to the Sanchezes in 2022? b. Assume the original facts, except that the Sanchezes rent a home and pay $21,000 in rent during the year. What is the after-tax cost of their rental payments in 2022? c. Assuming the interest expense is their only itemized deduction for the year and that Javier and Anita file a joint return. have great eyesight, and are under 60 years of age, what is the after-tax cost of their 2022 interest expense