Two Masses, 5 Kg and 3 Kg, Are Connected by Massless

Multiple Choice

Two masses, 5 kg and 3 kg, are connected by massless string. A cord is then attached to the 5-kg mass, and the two masses are pulled across a smooth flat table. If the masses accelerate at 2 m/s $2$ , what is the tension in the massless string (between the two masses) ?

A) 10 N
B) 4 N
C) 5 N
D) 6 N