Find the potential function f for the field F. F = 9x8y10z 10i + 10xy z 10j + 10xy 10z"k 9, 10_10 x y Z O A. f(x.y.z) = 900 O B. f(x,y.z) = x yz 30 *C. f(x,y.z)=x y z10 + c XD. f(x.y.Z) = xy10z10 + 10x y z 10-9Calculate the circulation of the field F = xyi + 10j around the closed curve C. C: r(t) =5 cos ti + 5 sin tj, Osts 2n 110 O A. 3 10 OB. 3 O C. 20 D. 0