5 The NEG instruction in MARIE replaces the value in the AC register with its negation in twos complement. For example, if the AC register has the value 0x123, then NEG would store the value 0xFEDD in the AC register. Show the RTN instructions that are used to process the NEG instruction. Include the RTN for fetching as well. See slides for examples. Hint : All of the values that you need are already in registers. No additional fetches are nec- essary