The answer says A is correct
A. javac -classpath MyJar.jar GetJar.java
java GetJar
B. javac MyJar.jar GetJar.java
java GetJar
C. javac -classpath MyJar.jar GetJar.java
java -classpath MyJar.jar GetJar
D. javac MyJar.jar GetJar.java
java -classpath MyJar.jar GetJar
But actually none of the above is correct.
The correct one should be a E
E. javac -classpath MyJar.jar GetJar.java
java -classpath MyJar.jar:. GetJar