Verify the Formula for N = 1, 2, 3, and 4.Is

Multiple Choice

Verify the formula for n = 1, 2, 3, and 4.Is it correct? $$6 + 12 + 18 \cdots + 6 n = \frac { 5 n ( n + 1 ) } { 2 }$$

A) no
B) yes