Which statements are correct for small elastic deformation of uniform rods or wires under distributed loading?

Select all that apply

• Option A

  A vertical uniform rod elongates under its own weight even if no external load is attached at the lower end.

• Option B

  Tension in a freely hanging uniform rod is maximum at the upper end.

• Option C

  In a uniform rod rotating about one end in a horizontal plane, tensile stress is maximum at the rotating end.

• Option D

  For a hanging uniform rod of fixed material and length, self-weight elongation is independent of its cross-sectional area.