X is a prime number bigger than 10. Also, Y = X+X^3+X^5+X^7. What is definitely true about Y?  Choose the correct choice from the following choices
A) Y is a prime number.  B) Y is odd.  C) Y is even.  D) Y is divisible by 3.  E) Y is divisible by 7.
Assume X= 11 (Since there can be only one unique answer)   Therefore Y= 11 + 11^3 + 11^5 + 11^7   Y=[ Odd + Odd ] + [Odd +Odd]   Y= Even + Even   Y= Even   Ans: Y is even.
<result>C</result>
X is a prime number bigger than 10. Also, Y = X+X^3+X^5+X^7. What is definitely true about Y?