Which of the following statements accurately describes the relationship between trophic levels and organisms in a food chain?

Assertion: Each step or level of a food chain is called a trophic level.
Reason: The organisms occupying the first trophic level are called producers.

A) Both the Assertion and Reason are correct, and the Reason is the correct explanation of the Assertion.
B) Both the Assertion and Reason are correct, but the Reason is not the correct explanation of the Assertion.
C) The Assertion is correct, but the Reason is incorrect.
D) Both the Assertion and Reason are incorrect.