a, b and c are non-zero real numbers such that the numbers -2a^4b^3c^2 and 3a^3b^5c^(-4) have the same sign. Which of the following statements is definitely correct? (A) ab > 0 (B) b < 0 (C) c > 0 (D) bc > 0 (E) a < 0
The correct statement is (D).
+166 
