Guinea-Bissau:

14% of the population speaks the official language Portuguese, the language of government and national communication during centuries of colonial rule. 44% speak Kriol, a Portuguese-based creole language, which is effectively a national language of communication among groups. The remainder speak a variety of native African languages unique to ethnicities.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". What is the official language of Guinea-Bissau?
Portuguese