The length of the latus rectum of an ellipse is \( 1 / 3 \) of P th...

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The length of the latus rectum of an ellipse is \( 1 / 3 \) of
P the major axis. Its eccentricity is:

W
(1) \( \frac{2}{3} \)
(2) \( \sqrt{\frac{2}{3}} \)
(3) \( \frac{5 \times 4 \times 3}{7^{3}} \)
(4) \( \left(\frac{3}{4}\right)^{4} \)
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