Let C be the counter-clockwise planar circle with center at the origin and radius r> 0. Without computing them, determine for the following vector fields F whether the line F. dr are positive,...

Q 10 - Please help me with this problem, needed the correct answer with an explanation, please

Extracted text: Let C be the counter-clockwise planar circle with center at the origin and radius r> 0. Without computing them, determine for the following vector fields F whether the line F. dr are positive, negative, or zero and type P, N, or Z as appropriate. A. F = the radial vector field = zi + yj: B. F = the circulating vector field = -yi+ ej: C. F = the circulating vector field = yi – zj: D. F = the constant vector field = i+j: Submit answer