Let pp, qq, rr, and ss be the following propositions:

pp: colonel mustard was murdered
qq: the butler did it
rr: miss scarlet is lying
ss: the murder weapon was the candlestick
which of the following corresponds to the proposition: either miss scarlet is lying or the butler didn’t do it, but not both

select one:

r⊕¬qr⊕¬q

q⊕rq⊕r

r∨¬qr∨¬q

s↔¬r