The maximum value of the function is?f(x, y) = sin(x).cos(2y).cos(x + 2y) + sin(2y).cos(x + 2y).cos(x) in the region x=0; y=0; x+2y = 3

• A. 90
• B. cos(1)
• C. sin(1).cos(1)
• D. sin(3).cos(3)