// What does this refer to when you invoke a function as a method (that is, // you call a function from an object)? For example: function foo() { console.log(this); const obj = {x: 123, foo: foo}; obj.foo(); A. the global object B. the object that the function was 'called on' C. an object that this is explicitly set to by the caller OD. an "empty object" with no properties E. undefined OF. this code causes an error