The inverse ratio of 3: 2: 1 is?
Options:
(A) 2:9:5
(B) 2:3:0
(C) 2:3:5
(D) 2:3:6
(E) 2:3:1 Hmmm, my stream of consciousness:
1/3: 1/2: 1/1 = 2:3:6 So, the answer is (D).