What is the \(\text{LCM}\) of the numbers \(3, a,\) and \(7,\) if \(a\) is an integer and \(a \ge 3?\)

[Gmat_mission]

What is the \(\text{LCM}\) of the numbers \(3, a,\) and \(7,\) if \(a\) is an integer and \(a \ge 3?\)

Statement 1. \(a\) is a prime number greater than \(2.\)
Statement 2. Both \(\text{GCD}(3, a)\) and \(\text{LCM}(3, a)\) are factors of the number \(30.\)

Answer: E

Source: e-GMAT