With reference to the recently spread Ebola virus, consider the following statements: (A). The origin of the virus is still unknown, but fruit bats are believed to be the natural hosts of the Ebola virus. (B). This infection occurs through direct contact with blood through cut skin or mucous membranes or through other bodily fluids or secretions such as feces, urine, saliva, semen from infected people. (C). The virus is believed to have been transmitted from wild animals to humans. (D). The ELISA test, which is also used to diagnose AIDS, can be effectively used to diagnose the presence of Ebola virus in a patient. Which of the given statements is/are correct?

• A. Only B, D
• B. A, B, C only
• C. Only B, C, D
• D. A, B, C and D all