If a tax on a good is doubled, the deadweight loss from the tax

Assume an economy is operating on its production possibilities curve, which shows the production of military and civilian goods. If the output of military goods is increased, the output of civilian goods:

A) will increase too. B) will not change. C) must decrease. D) may increase or decrease.

If variable cost at each output level doubles,

a. ATC doubles b. AFC doubles c. MC remains unchanged d. MC doubles e. MC less than doubles