Q59,p3,d14. Match the following components of an expert system

a. I/O interface	i. Accepts user’s queries and responds to question through I/O interface
b. Explanation module	ii. Contains facts and rules about the domain
c. Inference engine	iii. Gives the user the ability to follow inferencing steps at any time during consultation
d. Knowledge base	iv. Permits the user to communicate with the system in a natural way

Codes :

a b c d

(A) i iii iv ii

(B) iv iii i ii

(C) i iii ii iv

 (D) iv i iii ii

Answer B