What is the meaning of this arithmetic micro-operation?
\(R3 \leftarrow R1 + \overline{R2} + 1\)
1
Content of R1 plus the 2’s complement of R2 transferred to R3
2
Content of R1 plus R2 after increments transferred to R3
3
Content of R1 plus the 1’s complement of R2 transferred to R3
4
Content of R1 plus R2 transferred to R3