As , \"In" sume C is a circle centered at the origin, oriented counterclockwise, that encloses disk R in the plane. Complete the following steps for the vector eld F = (2y, - 8X). a. Calculate the two-dimensional curl of F. b. Calculate the two-dimensional divergence of F, c. ls F irrotational on R? d. Is F source tree on R? a. The two-dimensional curl of F is D b. The two-dimensional divergence of F is E c. F E irrotational on R because its E is :1 zero throughout R. ' d. F E source tree on R because its E is 1 zero throughout R