A computer system with a word length of 32 bits has a 16 MB byte-addressable main memory and a 64 KB, 4-way set associative cache memory with a block size of 256 bytes. Consider the following four physical addresses represented in hexadecimal notation.
A1 = 0x42C8A4, A2 = 0x546888, A3 = 0x6A289C, A4 = 0x5E4880
Which one of the following is TRUE?
1
A2 and A3 are mapped to the same cache set.
2
A1 and A3 are mapped to the same cache set.
3
A1 and A4 are mapped to the same cache set.
4
A2 and A4 are mapped to the same cache set.