The correct option is B Near river banks
Pneumatophore are small negatively geotropic vertical roots. Pneumatophores have lenticels for gaseous exchange. They are connected with internal aerenchymatous tissue. Pneumatophores are common in plants growing in mangroves and marshy areas. In mangroves, a number of halophyte plants possess pneumatophores. They are commonly seen in plants growing along the bank of rivers, where river meet the sea.