In the case of a P.S.C. beam, to satisfy the Limit State of Serviceability in cracking, match List-I with List-II and select the correct answer using the codes given below the lists:



List - I

A. Class 1 structure

B. Class 2 structure

C. Class 3 structure

List- II

1. No visible cracking ${\sigma }_1<3N/m{m}^2$

2. Concrete section uncracked; crack width to be calculated to check

3. No cracking under service loads

$\text{Codes}:ABC$