Find the unit vector directed from A(1,−2,3) to B(4,2,−1).

Options

• Option A

  (3î+4ĵ-4k̂)/√(41)

• Option B

  (3î+4ĵ+4k̂)/√(41)

• Option C

  (-3î-4ĵ+4k̂)/√(41)

• Option D

  (4î+3ĵ-4k̂)/√(41)