Matching Questions - Engineering

Q1:

Match the following:
List I List II
A.1.Zero
B.2.0.2
C.3.Actuator
D.4.infinity

A A-1, B-2, C-3, D-4

B A-1, B-3, C-2, D-4

C A-4, B-3, C-2, D-1

D A-4, B-2, C-3, D-1

ANS:D - A-4, B-2, C-3, D-1

Anyone can explain what the solution is?