(i) D-mannose is the C4 epimer of D-talose. Draw the structure of D-mannose.

(ii) Draw the structure of the C4 “epimer” of D-ribose. The change in C4 makes this “epimer” an L-series sugar. What is the name of this L-series sugar?

In the Fischer projection of D-galactose, alter only the stereocenter responsible for its D designation. What new monosaccharide have you created?

Identify whether the given compound is D or L in configuration.