Wheeled tractors are replacing crawler tractors because________________?

Consider the following statements?
1. wheeled tractors travel faster
2. crawler tractors are more expensive
3. track parts of a crawler wear out quickly
4. crawler tractors have stick control
A. 1,3 and 4 are correct
B. 2, 3 and 4 are correct
C. 1,2 and 3 are correct
D. 1, 2 and 4 are correct