A5. Which of the following inequalities has no solution?
(A) $3 x-1<5-3 x$
(B) $\frac{2}{3} x-1 \geq \frac{2}{3} x-\frac{1}{2}$
(C) $\frac{2}{3} x+4 \leq \frac{3}{2} x+2$
(D) $2 x-\pi<\sqrt{5}+2 x$
(E) $x \leq x$
A5. The inequality $3 x-1<5-3 x$ has the solution $x<1$. The inequality $\frac{2}{3} x-1 \geq \frac{2}{3} x-\frac{1}{2}$ has no solution. The inequality $\frac{2}{3} x+4 \leq \frac{3}{2} x+2$ has the solution $x \geq \frac{12}{5}$. The inequalities $2 x-\pi<\sqrt{5}+2 x$ and $x \leq x$ are satisfied by every real $x$.