单选题

关于iOS10以上系统版本，修改导航栏标题颜色正确的是

Question

A. self.navigationController.navigationBar.tintColor = [UIColor whiteColor]

B. [self.navigationController.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}]

C. self.navigationController.navigationBar.barTintColor = [UIColor whiteColor]

D. 说法均不正确