ENT General 041f6abe Pinna develops from A 1st pharyngeal arch B 1st and 3rd pharyngeal arch C 1st and 2nd pharyngeal arch D 2nd pharyngeal arch High-Yield Explanation Pinna It develops from both 1st and 2nd brachial arches Period of development starts from 4–6 weeks and adult configuration is attained by 20th week From the