A student proposes the statement: 'Every positive integer that is a multiple of 4 is also a multiple of 8.' What would be a counterexample to this statement?
a positive integer that is a multiple of 8 but not a multiple of 4
a positive integer that is neither a multiple of 4 nor a multiple of 8
a positive integer that is a multiple of 4 and a multiple of 8
a positive integer that is a multiple of 4 but not a multiple of 8
a positive integer that is a multiple of 8 but not a multiple of 16
