The Miller Corporation makes two products; paper and cardboard. The relationship between, the firm's annual profit (in thousands of dollars), and its output of each good is

= -80 + 50 Q₁ + 40 Q₂ -8 Q₁² - 6 Q₂² -2 Q₁Q₂,

where Q₁ is the firm's annual output of paper (in tons),

and Q₂ is the firm's annual output of cardboard (in tons).

To maximize profit, the Miller Corporation should produce ... tons of paper and ... tons of cardboard.

A. 2.766 and 2.8672, respectively.

B. 2.856 and 2.872, respectively.

C. 3.766 and 2.766, respectively.

D. 2.8672 and 3.766, respectively.

E. None of the above.