a. What other monosaccharide is reduced only to the alditol obtained from the reduction of 1. D-talose?

Question:

a. What other monosaccharide is reduced only to the alditol obtained from the reduction of
1. D-talose?
2. D-galactose?
b. What monosaccharide is reduced to two alditols, one of which is the alditol obtained from the reduction of
1. D-talose?
2. D-mannose?