Hi, I hope that you can help me with this question. Thank you in advance!

According to comparative advantages, what would be a terms of trade that both countries could accept?

Production per day	Airplanes	Trains
Land A	8	4
Land B	6	2

A.) 1 airplane = 4/10 train

B.) 1 airplane = 2.5 train

C.) 1 airplane = 1/4 train

D.) 1 train = 3.5 train

E.) 1 airplane = 2/3 train