|A||IgM has maximum half-life|
|B||IgE has least serum concentration|
|C||IgG has maximum sedimentation co-efficient|
|D||All are true|
Highest serum half life and serum concentration is of IgG ,i.e 23 days, while least serum half-life and serum concentration is of IgE. Highest sedimentation coefficient is of IgM.