-Refer to the Above Figure $\mathrm { Q } _ { 1 }$

-Refer to the above figure.The profit maximizing quantity for this firm is

A) zero.
B) $\mathrm { Q } _ { 1 }$ .
C) $\mathrm { Q } _ { 2 }$ .
D) $\mathrm { Q } _ { 3 }$ .