The question includes two statements: an Assertion (A) and a Reason (R). We need to evaluate these statements to determine their validity and the relationship between them.

1. Assertion (A): Information is transferred from Short-Term Memory (STM) to Long-Term Memory (LTM).
   • This statement is true. In cognitive psychology, the transfer of information from STM to LTM is a recognized process. This transfer often involves encoding and consolidation, which can be influenced by various factors such as rehearsal, association, and meaning.
2. Reason (R): Information maintained in the rehearsal buffer is prevented from decaying in STM.
   • This statement is also true. The rehearsal loop in STM allows information to be kept active and prevents it from fading. Active rehearsal helps in maintaining information in STM temporarily, facilitating its transfer to LTM.

Although both statements are true, the reason provided (R) is not the direct explanation for the assertion (A). The assertion describes the process of transferring information to LTM, while the reason explains a method of maintaining information in STM. Therefore, the correct answer is that both statements are true, but (R) is not the correct explanation of (A).