Scenario 6-1 Grant Smith Was a Doctor. in 1944, He Made $12 000

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 $175 000. The price index in 1944 was 17.6 and the price index last year was 192.
-Refer to the Scenario 6-1.What was the ratio of Grant's real income to Lisa's real income?

A) 2:15
B) 3:5
C) 7:10
D) 7.5:10