English to Spanish Bus/Financial Accounting

Saludos!

Estoy confundida con este término : (

Aquí están los contextos:

* An imprest bank account is
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D: A local post office box from which a local bank is authorized to pick up and deposit remittances.
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Answer (d) is incorrect because this is a description of a lockbox account.

* For good internal control over the disbursement of payroll checks, a company makes a specific amount of cash available in a checking account for this limited purpose. The type of account used for this purpose is called a(n)
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C: Lockbox account.
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Answer (c) is incorrect. Lockbox accounts are frequently used by large, multilocation companies to make collections in cities within areas of heaviest customer billing. The company rents a local post office box and authorizes a local bank to pick up the remittances mailed to that box number.

Muchísimas gracias!!!!