Find the extreme values of f(x,y) = 4x + 6y subject to the constraint x² + y² = 13. 2 OA. The maximum is 36 at (3,4). The minimum is 0 at (0,0). OB. The maximum is 26 at (2,3). The minimum is 0 at (0,0). Oc. The maximum is 26 at (2,3). The minimum is - 26 at (-2, -3). OD. The maximum is 36 at (3,4). The minimum is - 36 at (-3,-4).

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