Read the paragraph and decide which of the sentences that follow best states the implied main idea?
Gum chewing has been occurring in classrooms for decades. Many teachers are distracted by the constant sound of gum chewing while they teach class. Teachers often have to remove gum from the backs of desks or from classroom floors. The gum is unsanitary and unsightly.
A.
Gum is a distraction for teachers.
B.
Gum is unsanitary and unsightly.
C.
Gum chewing has been occurring in classrooms for decades.
D.
Gum chewing should not be allowed in class.