(1) Old Granddad can no longer safely navigate the stairs in his home. So he pays $60,000 to have an elevator installed. Explain how you would treat this ex-penditure within the medical expense deduction rules. In 4-5 sentences, give a hypothetical example of how a deductible amount would be calculated. Alterna-tively, if you believe that no deductible would be available, explain why in 4-5 sentences