# If the circle

Question:

If the circle $x^{2}+y^{2}-6 x-8 y+\left(25-a^{2}\right)=0$ touches the axis of $x$, then a equals :-

1. $\pm 4$

2. $\pm 3$

3. 0

4. $\pm 2$

Correct Option: , 3, 4

Solution: