If a student gets marks : English 80, Hindi 70, Mathematics 85, Physics 75 and Chemistry 67 and the weights of subjects are 1,2,1,3,1 respectively then weighted A.M is

Question

$\begin {array} {1 1} (A)\;74.625 & \quad (B)\;75.625 \\ (C)\;73.625 & \quad (D)\;None \: of \: these \end {array}$