 <translate> One of the following sentences is nonsensical. Which one is it?
Options:
- Sentence A: "Ants are building houses."
- Sentence B: "He's building a house."
 Let's reason step by step: <yor> Ọ̀kan lára àwọn gbólóhùn tó wà nísàlẹ̀ yìí kò ní ìtumọ̀ kankan. Èwo nínú wọn ni? Àwọn àyè: - Ìsọfúnni A: "Àwọn èèrà ń kọ́lé". - Ẹsẹ B: "Ó ń kọ́ ilé kan". Ẹ jẹ́ ká gbé ọ̀rọ̀ náà yẹ̀ wò ní ṣísẹ̀-n-tẹ̀lé: 