The table below shows the current contents of a TLB for a virtual memory system with a page size equals to 4Kbytes. What is the size of the physical memory that is installed on the system? Dirty 1 Entry Number 1 2 3 4 5 6 7 8 Valid 1 1 1 0 0 0 Virtual Page Number (20 bits) 00005 00010 0001A 0000F 00020 0003A 00099 0004D Physical Page Number (18 bits) 2E015 101 A4 30100 1D000 201A4 20000 09D11 01010 Reference 1 1 1 0 0 0 0 0 0 1 1 1 1 0 0 0 0 O a. 6 GBytes O b. 4 GBytes O c. 2 GBytes O d. 1 GBytes O e. 8 GBytes Clear my choice