One factor contributing to the decline in cost advantages that banks once had is the

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Part $1$

A$.$

decline in the importance of savings deposits from over $40$ percent of$$ banks' liabilities to under $20$ percent today.

B$.$

decline in the importance of savings deposits from over $60$ percent of$$ banks' liabilities to under $15$ percent today.

C$.$

decline in the importance of checkable deposits from over $60$ percent of$$ banks' liabilities to $11$ percent today.

D$.$

decline in the importance of checkable deposits from over $40$ percent of$$ banks' liabilities to $15$ percent today.