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# Which one of the following does not exhibit the phenomenon of mutarotation?

$\begin {array} {1 1} (A)\;(+)-Sucrose & \quad (B)\;(+)-Maltose \\ (C)\;(+)-Lactose & \quad (D)\;(+)-Fructose \end {array}$

Muta rotation is the process involving gradual change in optical rotation of either form of carbohydrate in aqueous solution to that of equilibrium mixture the structure of sucrose shows that it does not have free $CHO$ and $CO$ groups
Ans : (A)