(a) Find the dot product v w; (b) find the angle between v and w; (c) state whether the vectors are parallel, orthogonal, or neither. v=-3i-j, w=-i-j (a) v.w= (Simplify your answer. Type an exact answer, using radicals as needed.) (b) The angle between v and w is . (Type your answer in degrees.) (c) Are v and w parallel, orthogonal, or neither? A. parallel B. orthogonal neither