Identify the FALSE statement from the following pertaining

Identify the FALSE statement from the following pertaining to the methods of structural analysis.

1. Influence lines for stress resultants in beams can be drawn using Muller Breslau's Principle
2. The Moment Distribution Method is a force method of analysis, not a displacement method.
3. The Principle of virtual displacements can be used to establish a condition of equilibrium.
4. The Substitute Frame Method is not applicable to frames subjects to significant sidesway.

Moment Distribution method is a displacement method.