Ebola virus disease (EVD) or Ebola hemorrhagic fever (EHF) is a disease of humans and other primates caused by an Ebola virus. Symptoms start two days to three weeks after contracting the virus, with a fever, sore throat, muscle pain and headaches. Typically, vomiting, diarrhoea and rash follow, along with decreased functioning of the liver and kidneys. Around this time, affected people may begin to bleed both within the body and externally. The Government of India at the major airports of India is scanning all the people coming from the West African countries. Which among the following could be reason for scanning the people coming from the West Africa? 

(A) All the people coming from West Africa are suffering from the disease.

(B) India does not have the medical facilities to cure this virus.

(C) Since it is a viral disease it can be transmitted to others also.

(D) India has been given strict instructions from WHO to scan the people.