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) $\pi / 2$