According to the limit state theory, and as taken by IS 456, the maximum compressive strain in concrete in axial compression is taken as:

Correct option is B

According to IS 456:2000 (Limit State Method):
The maximum compressive strain in concrete under axial compression is taken as 0.002.
This value is used for the limit state of collapse in compression members such as columns.
For reference:
In flexure, the maximum compressive strain in concrete is 0.0035.
In axial compression, the strain limit is lower due to uniform stress conditions.