Scenario 6-1 Grant Smith Was a Doctor.In 1944,he Made $12,000.His Daughter,Lisa Smith,is

Scenario 6-1
Grant Smith was a doctor.In 1944,he made $12,000.His daughter,Lisa Smith,is also a doctor.Last year she made $275,000.The price index in 1944 was 17.6 and the price index last year was 200.
-Refer to the Scenario 6-1.What was the approximate ratio of Grant's real income to Lisa's real income?

A) 1:2
B) 3:5
C) 7:10
D) 7.5:10