\text { Consider } \psi(x, y)=7 x^{2} y-(2 / 7) y^{3} x which is true? Use scratch paper to show calculations. A) potential function exists that is orthogonal to the

stream function B) does not satisfy continuity so no need to consider this function any further C) satisfies continuity, rotational, potential function does not exist, 3-D D)satisfies continuity, irrotational, 2-D E) satisfies continuity, vorticity is equal to zero, potential function is the inverse function