Find the center, foci, and vertices of the ellipse. 25x2 +16y2 = 400 a. center at (0, 0) foci at (-3, 0) and (3, 0) vertices at (-5, 0), (5,0) b. center at (0, 0) foci at (0, -3) and (0, 3) vertices at (0, -5), (0, 5) c, center at (0, 0) foci at (0, 5) and (4, 0) vertices at (0,25) and (16, 0) d. center at (0, 0) foci at (0, -5) and (0,5) vertices at (0, -25), (0, 25)