Read the list of elements given below.

F, Cl, Br, I

Which of the following about the elements is true? (5 points)

a
All of them are highly reactive metals.

b
All of them are highly reactive nonmetals.

c
F and Cl are reactive nonmetals and Br and I are highly reactive metals.

d
F and Cl are reactive metals and Br and I are highly reactive nonmetals.