Remove or Add Parentheses as Indicated $a + b \cdot a + b = a ^ { 2 } + 2 a b + b ^ { 2 }$

Multiple Choice

Remove or add parentheses as indicated.
-Place parentheses to make the equation $a + b \cdot a + b = a ^ { 2 } + 2 a b + b ^ { 2 }$ true.

A) $a + b \cdot ( a + b ) = a ^ { 2 } + 2 a b + b ^ { 2 }$
B) $( a + b ) \cdot ( a + b ) = a ^ { 2 } + 2 a b + b ^ { 2 }$
C) None needed.
D) $( a + b ) \cdot a + b = a ^ { 2 } + 2 a b + b ^ { 2 }$