Answer the next question on the basis of the following information about the opportunity costs of two products -fish (f) and chicken (c)-in countries singsong and harmony. assume that production occurs under conditions of constant costs and these are the only two nations in the world. finally, the opportunity costs of fish in terms of chicken are: singsong: 1f 2c, harmony: 1f 4c. which one of the following would not be feasible terms for trade between singsong and harmony?

a.1 chicken for 1a of a fish
b.1 fish for 2% chickens
c.1 fish for 3 chickens
d.1 chicken for 1/s of a fish