Two hexoses form the same osazone find the correct statement about these hexoses

Options

A. Both of them must be aldoses
B. They are epimers at `C-3`
C. The carbon atoms `1` and `2` in both have the same configuration
D. The carbon atoms `3,4` and `5` in both have the same configuration

Answer

D

Explanation

In the formation of osazone `C-1` and `C-2` react with phenyl hydrazine to form phenyl hydrazone. If `C-3,C-4,C-5` have same configuration the carbohydrates will form same osazone even if they differ in configuration at `C-1` or `C-2`.