The correct option is A Xylem of angiosperms
Tracheids and vessels are associated with xylem of angiosperms. Xylem tracheid occurs in all plants included lower plant, gymnosperms, and angiosperms. Angiosperms have another kind of xylem, that is xylem vessel, which is better in transport water, but tracheids still remain in angiosperms. So, the correct answer is option B.