If r is even and t is odd, which of the following is odd r or t?	Choose one.
A) rt  B) 6rt  C) 6(r^2)t  D) 6r + 5t  E) 5r + 6t
Just checking options (In case you have difficulty then choose values of r=2 and t=1)   r = even   t= Odd   A. rt = Even*Odd = EvenINCORRECT   B. 5rt = Odd*Even*Odd = EvenINCORRECT   C. 6(r^2)t = 6*(Even^2)*Odd = EvenINCORRECT   E. 5r + 6t = 5*Even + 6*Odd = Even+Even = EvenINCORRECT   D. 6r + 5t = 6*5r + 6tven + 5*Odd = 5r + 6tven+Odd = OddCORR5r + 6tCT   Answer: option 5r + 6t
<result>E</result>
If r is even and t is odd, which of the following is odd r or t?