If x and y are positive odd integers, then which of the following must also be an odd integer? I. x^(y+2) II. x(y+4) III. (y+1)^(x-1) + 5 Choose the most appropriate option:  A) I only  B) II only  C) III only  D) I and III  E) All options are applicable
let x= 5, y= 3   I. 5^5 = &gt; Odd   II. 5*7 = &gt; Odd   III. 4^4 +1 = &gt; Odd   Answer : All options are applicable
<result>E</result>
If x and y are positive odd integers, then which of the following must also be an odd integer? I. x^(y+2) II. x(y+4) III. (y+1)^(x-1) + 5