MIPS uses conventions to manage data flow to support procedure calls and returns. (Select all that apply.)

	A.	A procedure can "return" up to two values by placing them in register $k0-$k1, before returning via jr.
	B.	Up to four procedure arguments can be "passed" by placing them in argument registers $a0-$a3 before calling the function with jal.
	C.	A procedure can "return" up to two values by placing them in register $v0-$v1, before returning via jr.
	D.	The data flow conventions MIPS uses are not enforced by the hardware or assembler, but programmers agree to them so that procedures written by different designers can interface with each other.