Three block of masses `m_(1),m_(2)` and `m_(3)` kg are placed in contact with each other on a frictionless table. A force F is applied on the heaviest mass `m_(1)`, the acceleration of `m_(2)` will be
A. `(F)/(m_(1))`
B. `(F)/((m_(1)+m_(2))`
C. `(F)/((m_(1)-m_(2))`
D. `(F)/((m_(1)+m_(2)+m_(3))`