Calculate the number of bits used for actual data and overhead (i.e., tag, valid bit, dirty bit) for each of the following caches A. Direct-mapped, cache capacity = 64 cache line, cache line size = 8-byte, word size = 4-byte, write strategy: write through B. Fully-associative, cache capacity= 256 cache line, cache line size = 16-byte, word size = 4-byte, write strategy: write back C. 4-way set-associative, cache capacity = 4096 cache line, cache line size = 64-byte, word size = 4-byte, write strategy: write back D. How the cache line size affect the overhead?