Find the absolute maximum and minimum values of the following function on the given region R. f(x, y) = sqrt(5x² + 5y² - 10x - 21)
a) Absolute maximum at (1, 2), absolute minimum at (3, 4)
b) Absolute maximum at (3, 4), absolute minimum at (1, 2)
c) Absolute maximum at (2, 1), absolute minimum at (4, 3)
d) Absolute maximum at (4, 3), absolute minimum at (2, 1)