e the given transformation to evaluate the integral. 12) u=x+y, v = -2x+y; ss 3x dx dy, R where R is the parallelogram bounded by the lines y = -x + 1,y=-x+4, y=2x+2, y = 2x + 5 A)-3 13) u=x+y, v=-2x+y; 4y dx dy, R B) -6 C) 3 D) 6 where R is the parallelogram bounded by the lines y=-x+1,y=-x+4, y=2x+2, y = 2x+5 A) 13 B) 26 C) 34 D) 17