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Two soap bubbles A and B are kept in a closed chamber where the air is maintained at pressure
\( \mathrm{P} \) \( 8 \mathrm{~N} / \mathrm{m}^{2} \). The radius of bubbles \( A \) and \( B \) are \( 2 \mathrm{~cm} \)

W and \( 4 \mathrm{~cm} \) respecitvely. Surface tension of the soap water used to make bubbles is \( 0.04 \mathrm{~N} / \mathrm{m} \). Find the ratio \( \frac{\mathrm{n}_{\mathrm{B}}}{\mathrm{n}_{\mathrm{A}}} \) where \( \mathrm{n}_{\mathrm{A}} \) and \( \mathrm{n}_{\mathrm{B}} \) are the number of moles of air in bubbles A and B respectively :-
(1) 2
(2) 9
(3) 8
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