Question: Azfar Hussain (Bengali: আজফার হোসেন ) is a Bangladeshi theorist, critic, academic, bilingual writer, poet, translator, and activist, Bengali, is also known by its endonym Bangla, it's the national, and official language of which country?
Sentence (from "Azfar Hussain"): He is also an editorial board member of the Bengali journals "Natun Diganta" and "Sarbajonakotha".
Relevant evidence: No