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【单选题】
设双曲线 x 2 a 2 - y 2 b 2 =1（a＞0，b＞0）的离心率为 5 4 ，抛物线y 2 =20x的准线过双曲线的左焦点，则此双曲线的方程为（　　）
A.
x 2 4 - y 2 3 =1
B.
x 2 3 - y 2 4 =1
C.
x 2 16 - y 2 9 =1
D.
x 2 9 - y 2 16 =1
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