assertion: substrate-level phosphorylation is the direct synthesis of atp. reason: it is very common in glycolysis. (A) Both a assertion and reason are correct statements, and reason is the correct explanation of the assertion. (B) Both assertion and reasen are correct statements, but reason is not the correct explanation of the assertion. (C) Assertion is correct, but reason is corect statement. (D) Assertion is correct, but reason is correct statement
