Assertion: Phenyl pyruvic acid is excreted through urine in the case of phenyl ketonuria. <br > Reason: The affected individual lacks enzyme phenyl alanine hydroxylase

Question

$\begin{array}{1 1}\text{a. Both Assertion and reason are true and Reason is the correct explanation of Assertion.} \\ \text {b. Both Assertion and reason are true, but Reason is not the correct explanation of Assertion.} \\ \text{c. Assertion is true, Reason is false.} \\ \text{d. Both Assertion and reason are false.} \end{array}$