18. Bob's ball bearing buffing shop requires a payment of $1,000 to even inspect a barrel of ball bearings plus $3 per ball bearing. For the month of November (a notoriously slow month for ball bearing buffing) Bob planned for 3 barrels containing 200 ball bearings each, but the actual level of activity was 5 barrels containing 200 ball bearings each. The actual income from November was $5,682. The activity variance for the buffing of ball bearings income would be closest to: A. $3,200 F B. $2,900 F C. $1,800 U D. $1,800 F