Which of the following statements is true for wave motion.

Mechanical transverse waves cannot propagate through all the medium.
Mechanical transverse waves can propagate through solids only as solids have shear modulus of elasticity. They can only propagate through solids but, not in gas or a liquid because there is no mechanism for driving motion perpendicular to the propagation of the wave.

Longitudinal wave can propagate through all type of medium but not through vacuum as for the propagation of these waves medium is necessary.