1. Read the question.
2. As in other chapters, biotechnology products discussed in Biotechnology chapter adapt proper nomenclature as prescribed by the responsible organization. So, in light of this question, take the word and note of the letter that precedes the suffix –mab. Here, it’s –u-. Remember from your lecture notes that this signifies the human origin of the monoclonal antibody. Avoid confusing it with Humanized as this suggests different source.
3. Thus, the correct answer is B.
(Refer to Misbah’s EE lecture notes from the Biotechnology chapter of the these infixes)