Assertion: Blood samples should be taken during night time between 10.00pm to 4.00pm to detect filiariasis in man. Reason: Microfiliariae exhibit nocturnal periodicity

Question

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