Step 1: Look at the Assertion in isolation.
Voices heard with no real speaker present are auditory hallucinations. This is one of the textbook first rank symptoms used to recognise schizophrenia, so the statement is medically accurate.
Step 2: Look at the Reason in isolation.
Primary delusions, meaning false beliefs that appear out of nowhere without any preceding event to explain them, are also listed among the classic features of schizophrenia. Taken alone, this statement is correct too.
Step 3: Test whether one explains the other.
Hallucinations belong to perception, delusions belong to belief and thought content. Both can appear in the same patient with schizophrenia, but a delusion does not cause or account for a hallucination, they are separate symptom domains sitting side by side under the same diagnosis. So the Reason fails to explain the Assertion even though it is true.
Step 4: Clear away the other codes.
The code needing R to explain A is wrong for the reason above. The code needing A false is wrong, since hearing voices really does point toward schizophrenia. The code needing R false is wrong, since primary delusions genuinely occur in schizophrenia.
Final Answer:
Both statements are true, and the Reason is not a correct explanation of the Assertion.