Chapter 4 - Section 4.5 - Systems of Linear Inequalities - Exercise Set - Page 244: 21

C

We see that both expressions contain the strictly greater than sign or the strictly less than sign. Neither of them has a "$\leq$" or a "$\geq$" sign. Thus, we know both lines should be dashed. Combining this with the fact that y must be less than 5, this matches graph C.