Compound A is a D-aldopentose that on oxidation with dilute `NHO_(3)` give optically active aldaric acid B. On Kiliani-Fisher chain extension shown below. A is converted into C and D-glucose
`underset(("An aldopentose"))(A) underset(H_(2)O)overset(HCN)(rarr) underset(BaSO_(4))overset(H_(3)//Pd)(rarr) C+D-"Glucose"`
Answer the following three questions based on the above information.
Which of the following is not true regarding C and D-glucose ?
A. Both will form same osazone on treatment with excess of phenyl hydrazone
B. Both are reducing sugar
C. Both will form same aldaric acid on treatment will dilute `HNO_(3)`
D. They are diastereomers.
