If p is a prime number and w, x, y, z are four natural numbers whose sum is less than p, then (w+x+y+z)^p-(w^p+x^p+y^p+z^p) is always divisible by
A)p-1 B)p^2 C)p D)p+1

• p... option c
  
  if p is prime no then (a^p - a) is divisible by p.
• 12 years agoHelpfull: Yes(2) No(3)