Simplify the Expression $( 7 + i ) - ( 1 - 2 i )$

Multiple Choice

Simplify the expression. Enter the answer in a + bi form. $( 7 + i ) - ( 1 - 2 i )$

A) $6 + 3 i$
B) $6 - 3 j$
C) $6 + i$
D) $6 - i$