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What is CRH used for?()

A.It is used in combination with ACCMIN to cater for a layered cell structure in a dual band network

B.It is used as a temporary offset to make a cell appear better during cell re-selection

C.It is used as a hysteresis between location area borders

D.It is used in a limited service state to enable emergency calls

E.It is the maximum number of repeated unsuccessful access attempts

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