Find all the local maxima, local minima, and saddle points of the function.

A. f(-10, -5) = 2260, local maximum; f(10, 5) = -2240, local minimum
B. f(10, 5) = -2240, local minimum; f(10, -5) = -1740, saddle point; f(-10, 5) = 1760, saddle point;   local maximum
C. f(10, -5) = -1740, saddle point; f(-10, 5) = 1760, saddle point
D. f(-10, -5) = 2260, local maximum


Answer: B

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