(c) Suppose that you have a hierarchical access cache system with the following properties as shown in Figure Q4(c). Determine the average memory access time for this processor. Justify how cache memory improve the performance of a processor based on the differences in connection between the main memory and processor core for a non-cached and cached system. Li Cache Access Time: Ins, Hit Rate: 30% L2 Cache Access Time: 10ns, Miss Rate: 80% Main Memory Access Time: 100ns, Hit Rate: 100% Figure Q4(c): Hierarchical access cache system