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Which of the following statements is not true?

a$.$ In financial services firms, investments in IT infrastructure represent more than half of all capital investment.

b$.$ All the statements are true

c$.$ Cloud computing is the fastest growing form of computing.

d$.$ The Windows operating system is an operating system used by nearly $88$ percent of PCs$.$

e$.$ Most servers operate $15-20\%$ at what percent of capacity.

Clear my choice