Two identical blocks, each of mass m, are connected by a light inextensible string and placed on a smooth horizontal surface. A horizontal force F is applied on the first block towards the second. Which of the following gives the acceleration of each block and the tension in the string?
a) a=mF,T=F
b) a=mF,T=2F
c) a=2mF,T=2F
d) a=2mF,T=F