Express the Rational Number as a Fraction of Integers $0.91919191 \ldots$

Multiple Choice

Express the rational number as a fraction of integers.
- $0.91919191 \ldots$

A) $\frac { 9 } { 100 }$
B) $\frac { 10 } { 9 }$
C) $\frac { 9991 } { 9999 }$
D) $\frac { 91 } { 99 }$