Neuropathogenic amoeba are -a) Acanthamoebab) Ent. colic) Naegleriad) Ent. Histolytica: (A) a, (B) ac, (C) ad, (D) b
Answer is B. Neuropathogenic amoebae are  -

Naegleria fowleri causes primary amebic meningoencephalitis.
Acanthamaeba causes granulomatous amebic encephalitis
Balamuthia mandrillaris causes amebic meningoencephalitis.