Itemized Deductions (LO. 4) Rebecca and Irving incur the following medical expenses during 2020: Medical insurance premiums $4,740 Hospital 990 Doctors 1,855 Dentist 640 Veterinarian 195 Chiropractor 245 Cosmetic surgery 1,595 Over-the-counter drugs 180 Prescription drugs 220 Crutches 115 They receive $3,960 in reimbursements from their insurance company of which $315 is for the cosmetic surgery. Refer to Exhibit 8-2 to answer the following questions. If an amount is zero, enter "0". What is their medical expense deduction if their adjusted gross income is the following: a. Adjusted gross income of $47,000. Their medical expense deduction is $ b. Adjusted gross income of $74,000. Their medical expense deduction is $