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If k and t are integers and k^2 - t^2 is an odd integer, which of the following must be an even integer?
I. k + t +2
II. k^2 + 2kt + t^2
III. k^2 + t^2
A) None
B) I only
C) II only
D) III only
E) I, II, and III
OA=A
I. k + t +2
II. k^2 + 2kt + t^2
III. k^2 + t^2
A) None
B) I only
C) II only
D) III only
E) I, II, and III
OA=A
Life is a Test
