Below shows the production possibilities for the country of Emilon:

rice A-0, B-70, C-126, D-168, E-196

Beef A-60, B-54, C-42, D-24, E-0

a. The total cost of producing 126 rice is ____units of_____ (rice or beef)

b. The total cost of going from possibility C to possibility D is ______units of____(rice or beef)

c. The approximate per-unit cost of going from possibility C to possibility D is _____units of____ (beef or rice)

d. The total cost of going from possibility D to possibility C is ____units of____ (rice or beef)