Which of the following does not have a ratio of 2:3:4?
{8, 15, 2^4}
{2x, 3x, 4x}
{6m^2, 9m^2, 12m^2}
{8, 15, 2^4}
{2x, 3x, 4x}
{6m^2, 9m^2, 12m^2}