Question

The length of intercept on the straight line \( 3 x+4 y-1=0 \) by the circle \( x^{2}+y^{2}-6 x-6 y- \) \( 7=0 \) is (1) \( 2 \sqrt{2} \) (2) 6 (3) \( 4 \sqrt{2} \) (4) \( \sqrt{2} \)