Micromania Imports a Good That Costs $12,000 and Exports a Different

Micromania imports a good that costs $12,000 and exports a different good for a price of $9,000. Ten years ago it paid $6,000 for the good and received $3,000 for the good itexported. How have the terms of trade index changed from then to now?

A) From 25 to 75
B) From 66 to 300
C) From 75 to 25
D) From 300 to 66
E) None of the above