Determine whether the following trajectory lies on a circle. If so, find the radius of the circle and show that the position vector and velocity vector are everywhere orthogonal. r(t) = (sint+ 13 cost, V3 sint- cost) for Osts 2x Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The trajectory lies on a circle with radius O B. The trajectory does not lie on a circle