eBook Print Item 4 Transaction fees incurred by Schwab mutual funds to purchase and sell shares. Variable Cost 5. Property taxes on brokerage offices. Fixed Cost 6 Depreciation on brokerage office equipment, such as computers and computer networks. Fixed Cost 7 Advertising Variable Cost c. Esti mate the contribution margin for each segment, assuming deprecilation represents the majority of fixed costs Investor Services (in millions) 1,103 Advisor Services (in millions) 238 Estimated contribution margin d. If Schwab decided to sell its "Advisor Services" accounts to another company, estimate how much operating income would decline under the following assumptions. 4,494xmillion Assume the fixed costs that serve Advisor investors would not be sold but would be used by the other sector: