Solve $\sqrt { 2 x + 6 } = \sqrt { 5 x } - 1$

Solve: $\sqrt { 2 x + 6 } = \sqrt { 5 x } - 1$

A) $\{ 2 \}$
B) $\{ 5 \}$
C) $\{ - 5 \}$
D) no solution