Which of the following is true?

A$.$ The low cost of main memory coupled with the increase in memory capacity in most systems has obviated the need for memory management strategies.

B$.$ LRU is designed to benefit processes that exhibit spatial locality.

C$.$ The number of faults for a particular process always decreases as the number of page frames allocated to a process increases when first$-$in$-$first$-$out $($ FIFO $)$ replacement is used.

D$.$ Looping through an array exhibits both spatial and temporal locality.

E$.$ The best$-$fit memory allocation strategy leaves the largest leftover hole.