Arrange the correct sequence of enzymes which act on food in different regions of alimentary canal :

Question

$\begin {array} {1 1} (a)\;Pepsin & \quad (b)\;Ptyalin \\ (c)\;Dipeptidase & \quad (d)\;Carboxypeptidase \end {array}$

The correct answer is :

$\begin {array} {1 1} (1)\;(a),\: (c),\: (b),\: (d) & \quad (2)\;(b),\: (a),\: (d),\: (c) \\ (3)\;(a),\: (d),\: (c),\: (b) & \quad (4)\;(b),\: (a),\: (c),\: (d) \end {array}$