what is the correct answer for all of the mc

Static budgets work well for all of the following situations except Variable costs when activity level is close to the planned activity level Variable costs when activity level differs greatly from the planned activity level Fixed costs Fixed costs and variable costs when activity level is close to the planned activity level Flexible budgets include budgets for One level of activity Multiple levels of activity outside of the relevant range Multiple levels of activity within the relevant range Multiple levels of activity inside and outside of the relevant range Performance evaluation through management by exception recommends Follow up of material budget to actual variances Follow up of all unfavorable budget to actual variances Follow up of all favorable budget to actual variances Follow up of all budget to actual variances Which of the following of the following is false regarding controllable margin? Controllable margin is different than contribution margin Allocated company costs such as company liability insurance are included in controllable margin Allocated company costs such as company liability insurance are not included in controllable margin Controllable margin is used in performance evaluations of investment center managers