Who has taken over as the Director General of Ordnance Factories (DGOF) and Chairman of the Ordnance Factory Board (OFB) in Kolkata on 1 January 2019?

• A. G. R. Gopinath
• B. Saurabh Kumar
• C. Anand Mahindra
• D. Venugopal Dhoot
• E. Malvinder Mohan Singh