This is Machine Architecture and Organization course. please answer the questions precisely and circle the answer for me. Thanks

An ARC program calls the subroutine foo, passing it three arguments, a, b and c. The subroutine has two local variables, mand n. Show the position of the stack pointer and the contents of the relevant stack elements for a stack-based calling convention at the points in the program shown below. Note that subroutine foo does not return anything. a. Just before executing the call at label x b. When the stack frame for foo is completed C. Just before executing the ld at label z (i.e. when the calling routine resumes) ! Push the arguments a, b and c : call foo : ld &r1, fr2 foo: ! subroutine starts here y : jmpl 8r15 + 4, r0 An ARC program calls the subroutine foo, passing it three arguments, a, b and c. The subroutine has two local variables, mand n. Show the position of the stack pointer and the contents of the relevant stack elements for a stack-based calling convention at the points in the program shown below. Note that subroutine foo does not return anything. a. Just before executing the call at label x b. When the stack frame for foo is completed C. Just before executing the ld at label z (i.e. when the calling routine resumes) ! Push the arguments a, b and c : call foo : ld &r1, fr2 foo: ! subroutine starts here y : jmpl 8r15 + 4, r0