<prompt> All of the following statements regarding Rheumatoid ahritis are true, except?IgM antibody directed against Fc pa of IgGMorning stiffnessRaised ESRC - Reactive protein suggests a good prognosis  <response>: High ESR and CRP are associated with poor prognosis in rheumatoid ahritis. Rheumatoid factor IgM antibody directed against Fc poion of IgG and anti CCP antibody are present in 70-80 of cases. Anti CCP antibody are the most specific blood test for rheumatoid ahritis. 