A 1200 N Picture Hangs from a Nail in the Wall

Multiple Choice

A 120.0 N picture hangs from a nail in the wall.The maximum shear stress the nail can sustain is 1.000 $\times$ 10⁶ N/m².The smallest diameter the nail can be is

A) 10.46 mm.
B) 12.36 mm.
C) 14.84 mm.
D) 16.67 mm.
E) 18.35 mm.