【单选题】
A <{p}>caches client IP addresses to improve response times<{br/}><{/p}>
B <{p}>caches HTTP headers lo improve server load times<{br/}><{/p}>
C <{p}>caches selected pool members to improve load balancing times.<{br/}><{/p}>
D <{p}>caches data for reuse to cut down on transfer time for future requests<{br/}><{/p}>
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