Let the address stored in the program counter be designated by the symbol Y$1.$ The instruction stored in Y$1$ has the address part $($operand reference$)$ Y$2.$ The operand needed to execute the instruction is stored in the memory word with address Y$3.$ An index register

contains the value $9.$The processor register contains the value $25.$ What is the relationship between these various quantities if the addressing mode of the instruction is $($a$)$ direct $($b$)$ indirect $($c$)$ PC relative $($d$)$ indexed e$)$ Register direct