1

2 2

3 4 3

4 6 6 4

5 8 9 8 5

6 10 12 12 10 6

. . . . . .

. . . . . .

. . . . . .

In the triangle shown, the first diagonal line, 1, 2, 3, 4, ... begins at 1 and each number after the first is one larger than the previous number. The second diagonal line, 2, 4, 6, 8, ... begins at 2 and each number after the first is two larger than the previous number. The nth diagonal line begins at n and each number after the first is n larger than the previous number. In which horizontal row does the number 2016 first appear?

A90 (B) 94 (C) 88 (D) 91 (E) 89