下面代码的输出结果是 a=[1,2,3] if isinstance( a, float) print("{}" is float".format. a) else: print ("{}" is not float".format. a) A。执行代码出错 B a is
C.[1, 2, 3] is not float D. a is float A. 执行代码出错 B a is C.[1, 2, 3] is not float D. a is float B. a is C.[1, 2, 3] is not float D. a is float C. [1, 2, 3] is not float a is float D. a is float