A 3 kg block is placed over a 10 kg block and both are placed on a smooth horizontal surface. The coefficient of friction between the blocks is 0.2 . If a horizontal force of 20 N is applied to 3 kg block, accelerations of the two blocks in $ ms^{-2}$ are $(g=10\: ms^{-2})$

Question

$\begin {array} {1 1} (1)\;\large\frac{13}{4},0.6 & \quad (2)\;\large\frac{14}{3},3 \\ (3)\;\large\frac{13}{4},3 & \quad (4)\;\large\frac{14}{3},0.6 \end {array}$