Assertion: Trihydroxyglutaric acid `(HO_(2)C-CHOH-CHOH-CHOH-CO_(2)H)` exists in four stereoisomeric forms, two of which are optically acitve while the other are meso-forms.
Reason: It contains two asymmeric and one pseudo-asymmeric carbon atom.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true and the reason is the correct explanations of the assertion
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer

A

Explanation

If a molecule is divisible inot two identical halves and chiral carbon atom is odd.
Then. `-(n=3)`
Optically active isomer `=2^(n-1)-2^(n-2)=2`
Meso isomer `=2^(n-1//2)=2`