In a triangle with integer side lengths, one side is three times as long as a second side, and the length of the third side is $15$. What is the greatest possible perimeter of the triangle? （2006 AMC10B, Question 10) 
选项为:A:$$43$$  B:$$44$$  C:$$45$$  D:$$46$$  E:$$47$$  请回答其中一个选项.