2. The equation of the line obtained by rotating the line $2 x-y-4=0$ counterclockwise around its intersection with the $x$-axis by $\frac{\pi}{4}$ is
A. $3 x+y-6=0$
B. $x-3 y-2=0$
C. $3 x-y+6=0$
D. $x-y-2=0$
2. A Hint: The intersection point of the line $2x-y-4=0$ with the $x$-axis has coordinates $(2,0)$. Then use the angle formula to calculate the slope.