Provide an appropriate response.
The property 
= 
holds true only for positive variables. If the variables represent negative values, conversions must be made to imaginary numbers before the multiplication. Multiply and simplify: 
? 
A. -15i
B. 15i
C. 15
D. -15
Answer: D
Mathematics
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B. (0, -4), (-4, 0)
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D. (0, -2), (4, 0)
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A. Yes B. No
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