Consider the following statements regarding the crowding-out effect in the IS-LM framework under varying elasticity conditions:
A. In a perfectly elastic LM curve, fiscal policy is fully effective with no crowding-out.
B. In a vertical LM curve, fiscal policy causes full crowding-out.
C. Crowding-out refers to the fall in government spending due to higher private saving.
D. The extent of crowding-out depends on interest sensitivity of money demand.

Which of the above are correct?