What is the route of BCG vaccine?

Correct option is B

The BCG (Bacillus Calmette–Guérin) vaccine, used for tuberculosis prevention, is administered intradermally—usually in the upper arm—so that it forms a small bleb. Explanation of options:
· (a) ✘ IM route is not suitable for BCG.
· (b) ✔ Correct; intradermal route ensures localized immune response.
· (c) ✘ Vaccines are never given intravenously.
· (d) ✘ SC route is used for other vaccines like MMR, not BCG.