Given below are two statements :
Statement I : American Homoeopathic Pharmacopoeia, in its earlier editions, divided all vegetables and animal drug substance into four classes for preparation of mother tincture.
Statement II : The amount of drug substance was 1/2, 1/3, 1/6 and 1/10 in each of the respective classes.
In the light of the above statements, choose the correct answer from the options given below :