Write the Following Expressions So That No Answer Includes Negative $\frac { 9 u ^ { 3 } } { u ^ { 3 } }$

Multiple Choice

Write the following expressions so that no answer includes negative exponents.Assume the variables are nonzero.
- $\frac { 9 u ^ { 3 } } { u ^ { 3 } }$

A) 9u⁶
B) 9
C) $\frac { 9 } { 4 ^ { 6 } }$
D) 9u
E) None of these