-Refer to the Above Figure $\mathrm { W } _ { 2 }$

-Refer to the above figure.The wage rate under perfect competition is

A) $\mathrm { W } _ { 2 }$ .
B) $\mathrm { W } _ { 3 }$ .
C) $\mathrm { W } _ { 4 }$ .
D) $\mathrm { W } _ { 5 }$ .