If $k<0$ , What Is the Solution Set Of $|2 f-9|=k$ A) $\left\{\frac{\mathrm{k}-9}{2}\right\}$

Multiple Choice

If $k<0$ , what is the solution set of $|2 f-9|=k$

A) $\left\{\frac{\mathrm{k}-9}{2}\right\}$
B) $\varnothing$
C) $(-\infty, \infty)$
D) $\{0\}$