The ratio of the present ages of a man and his wife is 3 : 2. Which of the following can't be a possible ratio of their ages 25 years ago?  Choose the correct choice from the following choices:
A) 1: 3	B) 2: 3	C) 3:3	D) 4: 3	E) 5: 4
3x-25/2x-25 = 4/3   Therefore x=-25   Age cannot be negative.   Answer: 4: 3
<result>D</result>
The ratio of the present ages of a man and his wife is 3 : 2. Which of the following can't be a possible ratio of their ages 25 years ago?