A horizontal force `''F''` produces an acceleration of `6m//s^(2)` on a block resting on a smooth horizontal surface. The same force produces an acceleration of `3m//s^(2)` on a second block resting on a smooth horizontal surface. If the two blocks are tied together and the same force acts, the acceleration produced will be

Options

A. `1 m//s^2`
B. `2 m//s^2`
C. `4.5 m//s^2`
D. `9 m//s^2`