Multiply Using the Rule for the Product of the Sum $$( x - y + 4 ) ( x - y - 4 )$$

Multiply using the rule for the product of the sum and difference of two terms. Assume any variable exponents represent whole numbers.
- $$( x - y + 4 ) ( x - y - 4 )$$

A) $x ^ { 2 } - 2 x y + y ^ { 2 } - 8 x + 8 y - 16$
B) $x ^ { 2 } - 8 y + y ^ { 2 } - 16$
C) $x ^ { 2 } + y ^ { 2 } - 16$
D) $x ^ { 2 } - 2 x y + y ^ { 2 } - 16$

Correct Answer:

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