Assertion : For stabilisation of an emulsion a third component called emulsifying agent is usually added.
Reason : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. if both assertion and reason are false