Question 23
Two real numbers $a,b$ satisfy $|3a-b+1|=|b|$. Which of the following necessarily holds?
(A) $b=0$; (B) $a=-\frac13$; (C) $a\lt0$; (D) $b=\frac{3a+1}{2}$; (E) None of the preceding statements.
(A) $b=0$; (B) $a=-\frac13$; (C) $a\lt0$; (D) $b=\frac{3a+1}{2}$; (E) None of the preceding statements.