Problem 1-18g Unit conversion

$\mathrm {Convert \;4.7\; gm/cm^3 \;to\; kg/m^3}$

In solving this problem we must convert:

(A)   $gm\; \text {to}\; kg\; \text {and}\; cm\; \text{to} \; m$

(B)   $gm\; \text {to} \;m\; \text {and} \; cm\; \text{to} \; kg$