The optically inactive compound from the following is :-

Select the optically inactive compound among the following

The optically inactive α- amino acid among the following is-----

Which is optically inactive?

Which is optically inactive?

Reduction of hexose A (molecular formula C_(6)H_(12)O_(6) ) with sodium borohydride gives compound B and C. Compound B is optically inactive, whereas compound C is optically active. Which of the following is compound A?