All of the following statements about rheumatic fever/heart disease epidemiology in India are true except:

• A. Its prevalence varies between 2 to 11 per 1000 children aged 5-16 years
• B. Mitral regurgitation is the commonest cardiac lesion seen
• C. It occurs equally in females and males
• D. Rheumatic fever occurs in about 2% of streptococcal sore throats