According to Jones criteria for the diagnosis of rheumatic fever , which of the following is a major criteria:
Jones criteria for the diagnosis of rheumatic fever:
a) Major manifestations:

Carditis
Polyarthritis (migratory and painful)
Chorea (Sydenham's chorea
Erythema marginatum
Subcutaneous nodules over bones or tendons

b) Minor manifestations:

Fever
Arthralgia
Previous H/O rheumatic fever
Raised ESR or C-reactive protein
Leucocytosis
First or second degree AV block

c) PLUS

Supporting evidence of preceding streptococcal infection like recent scarlet fever, raised anti Streptolysin 0 (ASO) positive throat culture.
Fever
Arthralgia
Previous rheumatic fever
None