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The Charles Schwab Corporation ( SCHW ) is one of the more innovative brokerage and financial service companiet in the United States. The company provided information about its majer business segments as follows (in milions) for a recert year a. Hew do you believe schwab defines the difference between the segments? b. All of the following would be considered to be variable costs in the "Investor (Retai) Services" segment except: c. Fitirnate the contribution margin for each segment assuming that depreciation and amortiation are the only fued asiets incurred. serve advisory services (computen, serven, and fachies) would not be sold but mould be used by the other sector. maltion