Read the following statements related to ABA 
a) Inhibit seed germination 
b) Stimulates closure of stomata and increases the tolerance of plants to various kinds of stresses
c) It is called stress hormone
d) Play a role in seed development and maturation and dormancy
e) It is an inhibitor of plant metabolism
How many statements are correct?

It acts as a general plant growth inhibitor and an inhibitor of plant metabolism. 

ABA inhibits seed germination. ABA stimulates the closure of stomata and increases the tolerance of plants to various kinds of stresses.

ABA plays an important role in seed development, maturation and dormancy. By inducing dormancy, ABA helps seeds to withstand desiccation and other factors unfavorable for growth.