Assertion: Food chains generally consists of only three or four trophic levels.
Reason: There are generally a greater number of individuals at the lower trophic levels of a food chain.
a) Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
b) Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c) Assertion is correct but Reason is incorrect
d) Both Assertion and Reason are incorrect