According to Ramayana who was Lakshmana's mother?

In the Ramayana, King Dasharatha had three wives: Kaushalya (mother of Rama), Kaikeyi (mother of Bharata), and Sumitra (mother of Lakshmana and Shatrughna). Sumitra is specifically named as Lakshmana's mother in the text. The other options are incorrect because Kaushalya was Rama's mother, Panchali (Draupadi) is from the Mahabharata, and Kaikeyi was Bharata's mother.