The number of pounds that can be safely loaded onto an elevator, x, can be represented by the inequality x < 1,200. Which number line correctly represents this inequality?
0
200
400
600
800
1,000 1,200 1,400 1,600 1,800 2,000
++
800 1,000 1,200 1,400 1,600 1,800 2,000
0
200
400
600
0
200
400
600
800 1,000 1,200 1,400 1,600 1,800 2,000
+++
800 1,000 1,200 1,400 1,600 1,800 2,000
0
200
400
600