The approximate change in the volume of a cube of side $x$ metres caused by increasing the side by $3\%$ is

Question

$$(A)\; 0.06 x^3 \: m^3 \quad (B)\; 0.6 x^3 \: m^3 \quad (C)\; 0.09 x^3 \: m^3 \quad (D)\; 0.9 x^3 \: m^3$$