The following table,

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,

contains beta coefficient estimates for six firms. Calculate the expected increase in the value of each firm's shares if the market portfolio were to increase by 10 percent. Perform the same calculation where the market drops by 10 percent. Which set of firms has the most variable or volatile stock returns?

Company	Microsoft Money Central (MSN.com)
Computers and Software
Apple Inc. (AAPL)	2.84
Dell Inc. (DELL)	1.73
Hewlett Packard (HPQ)	1.27
Utilities
American Electric Power Co. (AEP)	0.74
Duke Energy Corp. (DUK)	0.46
Centerpoint Energy (CNP)	0.77

Company	Microsoft Money Central (MSN.com) Beta Estimate	Expected Increase
Computers and Software
Apple Inc. (AAPL)	2.84	%
Dell Inc. (DELL)	1.73	%
Hewlett Packard (HPQ)	1.27	%
Utilities
American Electric Power Co. (AEP)	0.74	%
Duke Energy Corp. (DUK)	0.46	%
Centerpoint Energy (CNP)	0.77	%

Input the expected decrease in the value of each firm's shares if the market portfolio were to decrease by 10%.(Round each answer to two decimal places.)

Company	Microsoft Money Central (MSN.com) Beta Estimate	Expected Decrease
Computers and Software
Apple Inc. (AAPL)	2.84	%
Dell Inc. (DELL)	1.73	%
Hewlett Packard (HPQ)	1.27	%
Utilities
American Electric Power Co. (AEP)	0.74	%
Duke Energy Corp. (DUK)	0.46	%
Centerpoint Energy (CNP)	0.77	%

Which set of firms has the most variable or volatile stock returns?(Select the best choice below.)

A.

Utilities

B.

Computer and Software firms