SeHAT-OPD Portal--Launched by Union Defence Minister Rajnath Singh

Current Context: The Union Defence Minister Rajnath Singh launched SeHAT-OPD Portal.

• The SeHAT-OPD Portal is an online medical consultation service that was launched for armed forces personnel and ex-servicemen.
• This service will ensure whether the armed forces and ex-servicemen get hassle-free health services.
• The service will provide access to quality health services in remote areas.
• Static Part:
• Army Chief: Gen MM Naravane
• Chief of Defence Staff: Gen Bipin Rawat
• Navy Chief: Admiral Karambir Singh

Question: 

Q.1 Who among the following launched SeHAT-OPD Portal?
a. Ravi Shankar Prasad
b. Ajit Doval
c. President Ram Nath Kovind
d. Rajnath Singh