Observe the following statements: I. The circle $x^2+y^2-6x-4y-7=0$ touches x-axis. II. The circle $x^2+y^2+6x+4y-7=0$ touches x-axis.Which of the following is a correct statement?

Question

(a) Both I and II are true

(b) Neither I nor II is true

(c) I is true, II is false

(d) I is false, II is true