单选题Given： What is the result？（）A CanadaB null CanadaC Canada nullD Canada CanadaE Compilation fails due to an error on line 26.
单选题
Given： What is the result？（）
A
Canada
B
null Canada
C
Canada null
D
Canada Canada
E
Compilation fails due to an error on line 26.
参考解析
解析：
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