单选题 在staticMethod方法中,哪条语句会导致编译错误? public class MyClass { private int instanceVariable; private static int staticVariable; public MyClass() { instanceVariable = 10; staticVariable = 20; } public void nonStaticMethod() { System.out.println("Instance variable: " + instanceVariable); System.out.println("Static variable: " + staticVariable); } public static void staticMethod() { // 以下哪条语句会导致编译错误? // A. System.out.println("Instance variable: " + instanceVariable); // B. System.out.println("Static variable: " + staticVariable); // C. int localVar = instanceVariable + staticVariable; // D. staticVariable = 30; } }