Stillwater Corporation produces stainless steel water tanks. Each water tank has a standard labor requirement of 3 hours. The standard wage rate is $12.00 per hour. During the most recent month, 2,500 water tanks were produced using 8,000 labor hours at the wage rate of $11.50 per hour. What are the (1) total labor variance and (2) the labor efficiency variance? (1) $2,000 F; (2) $6,000 F (1) $2,000 U; (2) $6,000 U (1) $4,000 U; (2) $6,000 F (1) $4,000 F; (2) $6,000 U