The pulley-string-spring system shown is initially in equilibrium. Which statements are correct?

Select all that apply

• Option A

  Initially spring tension T₁=4mg.

• Option B

  Initially rope tensions T₂=T₃=5mg.

• Option C

  Immediately after string S₃ is cut, mass 4m has zero acceleration.

• Option D

  Immediately after the cut, masses m and 3m have acceleration magnitude 5g/4.