类Teacher: class Teacher{  <br /> String name; float salary; <br /> Teacher(String name){   <br /> this.name = name; } <br /> Teacher(String name,float salary){  <br /> this.name = name;   <br /> this.salary = salary; } } <br /> 执行语句Teacher t = new Teacher(“Tom”,2000.0f);后,字段salary的值是哪一项?()  
A、 2000.0f
B、 0.0f
C、 null;
D、 2000