Imagine that you have the following program: What would be the proper way to store two return values from a function called get_chrs()? \[ \begin{array}{l} \text { chr1 + chr2 = get_chrs() } \\ \text { chr1, chr2 = get_chrs() } \\ \text { chr1, chr2, get_chrs() } \\ \text { get_chrs() = chr1 + chr2 } \end{array} \] Which of the variables defined could potentially be printed on line 8 ? 1:x=5 2:def foo (n): 3:y=n 4:defbar(): 5:z=4 6:returnz 7:xar() 8:print(VARIABLE) y n x,X y,z