Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion (A): Terpenes are polyisoprenes with formulae (C5H8). The value of n is used to determine the types in terpenes as mono, di, tri etc.
Reasons (R): Terpenes are made up of the arrangement of 2-methyl-1.3-butadiene units in head to tail manner.
In the light of the above statements, choose the correct answer from the options given below: