`D`-Glucose and `D`-fructose both form the same osazone, Which statements are correct about the above reaciton?
A. Glucose and fructose are epimers.
B. Glucose and fruc tose are anomers.
C. The c onfigurations of the OH group at C-3 and c-4 in glucose and fruc tose are same.
D. The configurations of the OH group at C -4 and C-5 in glucose and fructose are same.
