Match List-I with List-II and select the correct answer:

List-I	List-II
a. Natural numbers are derived from logical numbers	1. Russell
b. Logical atomism	2. Frege
c. Logical theory	3. Wittgenstein
d. Use theory of meaning	4. Strawson

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

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

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

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

Answer: Option A