$2.$ In class, the concept was discussed that the return address must be saved or preserved when a subroutine is called $($subroutines execute code for a function, procedure, or method, for example$).$ Two different ways of preserving$/$saving this return address were discussed in class and the class slides $($see slide set A$-3).$

a$.$ First, name the two different ways of saving a return address $($describe each briefly; a phrase or short sentence for each is sufficient$)$:

i$.$ ANSWER:

ii$.$ ANSWER:

b$.$ Next, explain the significant disadvantage of one of the ways which was described in class; also explain the kind of situation where this disadvantage occurs.

ANSWER:

c$.$ Finally, how does the other way of saving the return address overcome the disadvantage described above?

ANSWER: