Which one of the following statements is true ?

Options

A. Dysentery, plague and diphtheria are viral diseases.
B. HIV replicates in host cell with the help of reverse transcriptase enzyme.
C. The disease ringworm disappears during summer and rainy season.
D. Common cold could be confirmed by Widal test.

Answer

B

Explanation

Dysentery Bacillary), plague and diptheria are bacterial diseases. Ringworm appears during summer and rainly season. Widal test is used for confirmation of typhoid.