What is X ∪ Y if X={1, 5, 7, 10} and Y={6, 7, 8, 10}

A.{7, 10}
B.{2, 3, 4, 9}
C.{1, 5, 6, 7, 8, 10}
D.{a, 2, 3, 4, 5, 6, 7, 8, 9, 10}

need q po ngaun sana may makasagut ng maayus 20 pts po yan kaya pasagut maayus nonsense=5×report ​