An untwisted wing of elliptic planform and aspect ratio 6 consists of thin symmetric airfoil sections. The coefficient of lift (C $\mathrm{L}$ ) at $10^{\circ}$ angle of attack assuming inviscid incompressible flow is

(A) $\pi^{2} / 16$

(B) $\pi^{2} / 12$

(C) $\pi^{2} / 8$

(D) $\pi / 2$

An untwisted wing of elliptic planform and aspect ratio 6 consists of thin symmetric airfoil sections. The coefficient of lift (C $\mathrm{L}$ ) at $10^{\circ}$ angle of attack assuming inviscid incompressible flow is

(A) $\pi^{2} / 16$

(B) $\pi^{2} / 12$

(C) $\pi^{2} / 8$

(D) $\pi / 2$

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