Given: and the command line: java -Dprop.custom=gobstopper Commander 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");