A cubicle of wood was cut into 8 equal cubes of sides 7 cm. What is the volume of the block of wood?

Question

$\begin{array}{11} (a)\; \text{4802 cu.m} \\ (b)\; \text{2401 cu.m} \\ (c)\; \text{4096 cu.m} \\ (d)\; \text{8192 cu.m} \end{array}$