Accessing enclosing scope variables in lambda expressions

A lambda expression is enclosed in class C's method foo:

class C {

 // field x initialized
 int x = 100;

 // method foo
 void foo(int x) {

  /* lambda assigned to 
     functional interface */
  Runnable r = () -> {
      System.out.println(x);
  };

  // invoke lambda  
  r.run();
 }

}

Instantiate C and call foo in main():

// in main
C c = new C();
c.foo(200);

What will printed by c.foo(200) as x?