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Assertion (A) Ear muscles of external ear in man are poorly developed.
Reason (R) These muscles are useful which move external ear freely to detect sound efficiently.
(a) Both \( \mathrm{A} \) and \( \mathrm{R} \) are true and \( \mathrm{R} \) is the correct explanation of \( A \)
(b) Both \( A \) and \( R \) are true, but \( R \) is not the correct explanation of \( \mathrm{A} \)
(c) \( \mathrm{A} \) is true, but \( \mathrm{R} \) is false
(d) Both \( \mathrm{A} \) and \( \mathrm{R} \) are false
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