14. A four-way set associative cache has lines of 256 bytes and a total size of 128K bytes. The 2G bytes main memory is a byte-addressable. What are the numbers of bits use in tag, set, and word, respectively? (2 points)
1. Tag-16 bits, set-8 bits, word-7 bits
2. Tag-15 bits, set- 9 bits, word-8 bits
3. Tag-7 bits, set- 17 bits, word-7 bits
4. Tag-14 bits, set- 9 bits, word-8 bits
5. No answer