Luna, a self-employed accountant, currently earns $100,000 annually. Luna has been able to save 18% of her annual Schedule C net income. Assume that Luna paid $11,000 in Social Security taxes, and that she plans to pay off her mortgage at retirement, thereby relieving her of her only debt. Luna presently pays $1,500 per month toward the mortgage principal and interest. Based on the information provided herein, what do you expect Luna's wage replacement ratio to be at retirement? Select one. a. 49%

b. 53%

c. 59%

d. 63%