In an SRS, the Usability section will include which one of the following requirements?

System shall not be used without a redundant online host

System's transaction processing must keep pace with data-entry operators

A minimum of 20 users may use the system concurrently

Sub-menu wording and wording in online help when related shall be concordant

Answer:
Sub-menu wording and wording in online help when related shall be concordant

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