On a VMAX3 array, under which type of workload will Selective Cache Mirroring provide significant performance optimization?

On a VMAX3 array, under which type of workload will Selective Cache Mirroring provide significant performance optimization?
A . Large block Write Miss I/Os
B . Small block Write Hit I/Os
C . Large block Read Miss I/Os
D . Large block Read Hit I/Os

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Answer: A