Wheeled tractors are replacing crawler tractors because 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. of following statements%!

• 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