Choose the Most Reasonable Metric Unit for Each Blank $\mathrm{mm}$ B) $\mathrm{cm}$

Multiple Choice

Choose the most reasonable metric unit for each blank.
-The flagpole is 6 high.

A) $\mathrm{mm}$
B) $\mathrm{cm}$
C) $\mathrm{m}$
D) $\mathrm{km}$