下面代码的执行结果是( )
>>> def area(r, pi = 3.

下面代码的执行结果是( )
>>> def area(r, pi = 3.14159):
return pi * r * r
>>> area(3.14, 4)

A.出错

B.39.4384

C.50.24

D.3.14,4

正确答案是B