In the xy-coordinate system, a circle with radiusfff\(\sqrt {13}\)/ffffff\(\sqrt30\)/fffand center (2,1) intersects the x-axis at (k ,0). One possible value of k is
A.fff\(2+\sqrt26\)/fff
B.fff\(2+\sqrt29\)/fff
C.fff\(2+\sqrt31\)/fff
D.fff\(2+\sqrt34\)/fff
E.fff\(2+\sqrt35\)/fff
我的答案：
