Which one is the correct answer?

Troy Company budgeted $12 million for customer service costs, but actually spent only $10 million Which of the following statements is the best course of action for management to take in this instance? Management will investigate this $2 million unfavorable variance to try to identify and correct the problem Because this $2 million variance is favorable, management does not need to investigate further Management will investigate this $2 million favorable variance to ensure that the cost savings do not reflect skimping on customer service Management should not investigate every major variance, especially an unfavorable variance