According to Census of India, which of the following is not true with respect to definition of Urban Settlement"?

At least 75% of total population engaged in non- agricultural activities

The census of India, 1991 defines urban settlements as “All places which have municipality, corporation, cantonment board or notified town area committee (D) and have a minimum population of 5000 persons (C), at least 75 per cent of male workers are engaged in non-agricultural pursuits (A is incorrect) and a density of population of at least 400 persons per square kilometers (B) are urban.