Write the Number in Expanded Form $\left( 1 \cdot 10 ^ { 2 } \right) + \left( 2 \cdot 10 ^ { 1 } \right)$

Multiple Choice

Write the number in expanded form.
-12

A) $\left( 1 \cdot 10 ^ { 2 } \right) + \left( 2 \cdot 10 ^ { 1 } \right)$
B) $\left( 1 \cdot 10 ^ { 1 } \right) + \left( 2 \cdot 10 ^ { 2 } \right)$
C) $\left( 1 \cdot 10 ^ { 0 } \right) + \left( 2 \cdot 10 ^ { 1 } \right)$
D) $\left( 1 \cdot 10 ^ { 1 } \right) + \left( 2 \cdot 10 ^ { 0 } \right)$