For positive integers \(a, b,\) and \(c,\) where \(a < b < c,\) the product \(abc\) has exactly three prime factors. What is the maximum number of prime factors of \(a?\)

A. 0
B. 1
C. 2
D. 3
E. 4

[spoiler]OA=D[/spoiler]

Source: Veritas Prep