The correct option is C Kolkata
The Botanical Survey of India (BSI) and UKs Natural History Museum (NHM) have signed a Memorandum of Understanding (MoU) in New Delhi on February 16, 2018 for cooperation in the field of genetic/taxonomic studies, research and training, conservation in India, including species and habitat conservation assessments, etc. The MoU will pave the way for BSI staff to work in Natural History Museum, London and vice-versa and they will share fairly and equitably the benefits that may arise from the collection, study and conservation of the plant materials such as seeds, herbarium specimens and tissue samples and exchange associated data and images. NHM will help BSI in capacity building in areas of systematic botany and long-term conservation of plant genetic resources in India. The headquarters of BSI is located in Kolkata, West Bengal.