Identify the ' place of hydrolysis of ATP ' and the ' power stroke ' in muscle contraction, in the picture given below :

Question

The correct answer is :

$\begin {array} {1 1} (1)\;(A) \: and \: (D) & \quad (2)\;(B) \: and \: (C) \\ (3)\;(C) \: and \: (D) & \quad (4)\;(A) \: and \: (B) \end {array}$