Why does the Government of India promote the use of ‘Neem-coated Urea’ in agriculture?

a) Release of neem oil in thesoil increases nitrogen fixation by the soil microorganisms

b) Neem coating slows down the rate of dissolution of urea in the soil

c) Nitrous oxide, which is a greenhouse gas, is not at all released into atmosphere by crop fields

d) It is a combination of a weedicide side a fertilizer for particular crops