(1 point) For each of the following vector fields F , decide whether it is conservative or not by computing the appropriate first order partial derivatives. Type in a potential function f (that is, V f = F) with f(0, 0) = 0. If it is not conservative, type N. A. F (x, y) = (1035 + mm + (2x + 14y)j f (x, y) = 2x+yA2xyf\\2 B. F(x, y) = 5;vi - 4x1 f(x,y) = N c. F (x, y) = (5 sin y)i + (4y 5x cos y)j f(x, y) = N Note: Your answers should be either expressions of x and y (e.g. "3xy + 2y"), or the letter "N"