问题
                    
His father looks young, but _____ fact he is _____
                            A:in; in the forties
B:in; in his forties
C:in the; in the forties
D:in; in his forty
                        
                        B:in; in his forties
C:in the; in the forties
D:in; in his forty
正确答案是:
                        