Multiply the Radical Expressions and Simplify Your Answer $$( \sqrt { y + 6 } - 7 ) ^ { 2 }$$

Multiple Choice

Multiply the radical expressions and simplify your answer.
- $$( \sqrt { y + 6 } - 7 ) ^ { 2 }$$

A) $y - 43$
B) $y + 14 \sqrt { y + 6 } - 55$
C) $y - 14 \sqrt { y + 6 } + 55$
D) $y + 55$