Hydrogen can be placed in VIIA ( 17th group) of periodic table because:

(a) Hydrogen forms hydrides like NaH similar to Group 17 halogens (NaF, Nacl, NaBr, NaI).

(b) Hydrogen, as well as halogen, are non-metals

(c) Hydrogen and halogens both can form an ionic and covalent bond.

(d) With respect to electronic configuration, similar to halogens, hydrogen requires only one electron to complete its valence shell and for achieving noble gas electronic configuration.

Hence Correct answer is [A].