contain a Statement with a Reason and an Assertion. For each question, choose the correct answer from the following four choices. Statement: D-Glucose and D-mannose give the same phenylosazone. Reason: Osazone formation results in a loss of the stereocentre at $\mathrm{C_2}$ but does not affect other stereocenters. Assertion: D-Glucose and D-mannose are enantiomers.