Assume a two-level inclusive cache hierarchy, L1 and L2, where L2 is the larger of the two. Consider the following statements.S1: Read misses in a write through L1 cache do not result in writebacks of dirty lines to the L2.S2: Write allocate policy must be used in conjunction with write through caches and no-write allocate policy is used with writeback caches.Which of the following statements is correct?

• A. S1 is true and S2 is true
• B. S1 is false and S2 is true
• C. S1 is false and S2 is false
• D. S1 is true and S2 is false