多选题Given： Which two， placed on line 13， will produce the output gobstopper？（）ASystem.load（"prop.custom"）；BSystem.getenv（"prop.custom"）；CSystem.property（"prop.custom"）；DSystem.getProperty（"prop.custom"）；ESystem.getProperties（）.getProperty（"prop.custom"）；
多选题
Given： Which two， placed on line 13， will produce the output gobstopper？（）
A
System.load（"prop.custom"）；
B
System.getenv（"prop.custom"）；
C
System.property（"prop.custom"）；
D
System.getProperty（"prop.custom"）；
E
System.getProperties（）.getProperty（"prop.custom"）；
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