Citrus greening disease mainly confined to

Answer: Option A

Citrus greening disease is mainly confined to North India.
Citrus greening disease is a disease of citrus caused by a vector-transmitted pathogen. The causative agents are motile bacteria, Liberibacter spp.
The distribution of the Asian citrus psyllid is a vector of the citrus greening disease, is primarily in tropical and subtropical Asia. The disease was first described in 1929 and first reported in China in 1943.