Two Blocks of Masses 22 Kg and 9 Kg Are

Multiple Choice

Two blocks of masses 22 kg and 9 kg are connected together by a light string and rest on a frictionless level surface.Attached to the 9-kg mass is another light string,which a person uses to pull both blocks horizontally.If the two-block system accelerates at 0.7 m/s²,what is the tension in the second string attached to the 8-kg mass?

A) 21.7 N
B) 9.1 N
C) 15.4 N
D) 6.3 N
E) ​31 N