Match List-I with List-II and select the correct answer using the options given below the lists:

List-I	List-II
a. Communication system	1. Multigraph
b. Filing system	2. E-mail
c. Duplicate copies	3. Franking Machine
d. Fixing stamp	4. Pigeon holes

A. a-4, b-3, c-2, d-1

B. a-2, b-4, c-1, d-3

C. a-1, b-4, c-3, d-2

D. a-4, b-2, c-1, d-3

Answer: Option B