Perform the operations. (-2yn - 3y + 4n) + (-5yn + 3y - 7n) - (5yn + 9y + 5n)

A. -2yn - 15y + 6n
B. -2yn + 9y + 2n
C. -8yn - 3y - 16n
D. -12yn - 9y - 8n

Answer: D

Mathematics

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