What does a full adder do that a half-adder does not?

Question 2 options:

1)	Adds four-bit numbers.
2)	Subtracts as well as adds.
3)	Multiplies as well as adds.
4)	Makes provision for a carry-in.

In the von Neumann architecture, main memory holds

Question 5 options:

1)	data only.
2)	instructions only.
3)	both data and instructions.
4)	neither data nor instructions.