Q3: a product based on a 16-bit-address processor contains the following memory modules: RAM1: 4KB starting at $1000; RAM2: 8KB starting at $6000, ROM1: 16KB starting at $A000 and ROM2: 2KB starting at $E000. Assume RAMs have active high chip select pins while ROMs have active low ones. Design a full address decoder for the product using a 74138 chip and some simple logic gates