The Table Below Shows the Total Cost of Producing Different

The table below shows the total cost of producing different units of a commodity. Table 21.2
Refer to Table 21.2.If the production of 2 extra units (units 11 and 12) increases total cost by $162, then:

A) the marginal cost of the twelfth unit will be $162.
B) the total cost of producing 12 units will be $894.
C) the average variable cost of producing 11 units is $732.
D) the average total cost of producing 12 units is $61.
E) the thirteenth unit will have to go up in price.