Bearings are provided in bridges, in order to:
1. Distribute the load from susperstructure on a large areas and to transfer to piers
2. Allow the grid order of the bridge to taken a free angular movement at the ends when loaded
3. Allow free movement of girders due to temperature variations.
4. Prevent excessive damage to the bridge if any pier sink slightly

Of these the correct utilities are

A

2, 3 and 4

B

1, 2 and 3

C

1, 2 and 4

D

1, 2, 3 and 4