Multiply.[(5x - y) + 2z][(5x - y) - 2z]

A. 25x2 - 10xy + y2 - 4z2
B. 25x2 + y2 - 4z2
C. 25x2 + y2 + 20xz + 4yz - 4z2
D. 25x2 - 10xy + y2 + 20xz + 4yz - 4z2

Answer: A

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