Help me I don't understand the last part

$2.40 per unit, and actual variable costs were $2.50 per unit. Actual fixed costs of $49,000 exceeded budgeted fixed costs by $4,600. Prepare Smith's flexible budget performance report. What variance contributed most to the year's favorable results? What caused this variance? $2.40 per unit, and actual variable costs were $2.50 per unit. Actual fixed costs of $49,000 exceeded budgeted fixed costs by $4,600. Prepare Smith's flexible budget performance report. What variance contributed most to the year's favorable results? What caused this variance