Problem Solving (PS) | Given that ab< 0 and a > b, which of the following must be true?

Given that \(ab< 0\) and \(a > b\), which of the following must be true?

I. \(a>0\)

II. \(b>0\)

III. \(\frac{1}{a} > \frac{1}{b}\)

A. I only
B. II Only
C. I and III Only
D. II and III Only
E. I, II and III

---