Identify the True Statement(s) About Equilibria

Identify the true statement(s) about equilibria.1. Homogeneous equilibria is the equilibria of systems in the gas phase.2. Heterogeneous equilibria is the equilibria of systems involving more than one phase.3. The concentration of pure solids and liquids involved in a chemical reaction is not included in the equilibrium expression for a given reaction.​

A) 1 only
B) 2 only
C) 3 only
D) 1, 2, and 3
E) 2 and 3