Which sequence best represents typical maintenance time intervals?

• A. 8 hours daily; 40 hours weekly; 200 hours; 1,500 hours
• B. 10 hours (daily); 50 hours (weekly); 100 hours, 250 hours, 500 hours and 1,000 hours
• C. 5 hours daily; 25 hours weekly; 150 hours; 750 hours
• D. 12 hours daily; 60 hours weekly; 180 hours; 900 hours

Answer: (B)