Random类可用来生成随机数。请选择生成50-100之间随机数的语句。Random rand=new Random();int n=rand.next(100);
A.
Random rand=new Random(); int n=rand.next(100);
B.
Random rand=new Random(); int n=rand.next(50);
C.
Random rand=new Random(); int n=rand.next(50)+50;
D.
Random rand=new Random(); int n=rand.next(50,100);