Reince Inc. reported actual annual income of $250,000. Its flexible budget annual income was $230,000 and its static budget annual income was $225,000. The company's flexible budget variance for annual income is: O $20,000 favorable O B. $20,000 unfavorable O C. $5,000 unfavorable O D. $25,000 favorable Which of the following amounts of a flexible budget changes, within the specified relevant range, when sales volume changes? M) O A. sales price per unit O B. total fixed costs O C. total contribution margin O D. variable cost per unit