Use a Quantifier to Make the Following True or False $x$

Multiple Choice

Use a quantifier to make the following true or false, as indicated, where x is a natural number.
-x + x = 6 (make true)

A) There is no natural number $x$ such that $x + x = 6$ .
B) There exists a natural number $x$ such that $x + x = 6$ .
C) For every natural number $x , x + x = 6$ .
D) For all natural numbers $x , x + x = 6$ .