A review of wide area network (WAN) usage discovers that traffic on one communication line between sites, synchronously linking the master and standby database, peaks at 96 percent of the line capacity. An IS auditor should conclude that: 
A、analysis is required to determine if a pattern emerges that results in a service loss for a short period of time. 
B、WAN capacity is adequate for the maximum traffic demands since saturation has not been reached. 
C、the line should immediately be replaced by one with a larger capacity to provide approximately 85 percent saturation. 
D、users should be instructed to reduce their traffic demands or distribute them across all service hours to flatten bandwidth consumption.