Suppose that a word-addressable system uses 32-bit memory words and its memory is built from 4M x 8 RAM chips. The systems is to have a total of 24M words 1. How many memory chips in total are used to build the entire system's memory? [Select ] 2. How many address bits are needed to identify any single word? I Select ] 3. How many address bits are connected to any single chip? [ Select ] 4. How many address bits are used to decode which memory bank to select? [Select ]