input: Write a function to print the absolute difference between two given numbers. The function should take two arguments A and B, and return the absolute difference using the abs() function.
  def absolute_difference(A, B):
      return abs(A - B)
  
  assert absolute_difference(9, 5)==4
  assert absolute_difference(7, 10)==3
  assert absolute_difference(-5, 3)==8
  assert absolute_difference(-2, -7)==5
output: def absolute_difference(A, B):
      return abs(A - B)