多选题 Given that the current directory is bigApp, and the following directory structure:
bigApp
|-- classes
|-- source
|-- com
|-- wickedlysmart
|-- BigAppClassl.java
And the code:
package com.wickedlysmart;
public class BigAppClassl {
int doStuff() {return 42; }
}
And the following command-line invocations:
Ⅰ. javac -d source/com/wickedlysmart/BigAppClassl.java
Ⅱ. javac -d classes source/com/wickedlysmart/BigAppClassl.java
Ⅲ. javac -d classes/com/wickedlysmartsource/com/wickedlysmart/BigAppClassl.java
Which are true? (Choose all that apply.)

A、 Invocation Ⅰ will compile the file and place the .class file in the bigApp directory.
B、 Invocation Ⅱ will compile the file and place the .class file in the classes directory.
C、 Invocation Ⅰ will compile the file and place the .class file in the wickedlysmart directory.
D、 Under the bigApp/classes directory, invocation Ⅱ will build com/wickedlysmart subdirectories, and place the .class file in wickedlysmart.
E、 Under the bigApp/classes directory, invocation Ⅲ will build com/wickedlysmart subdirectories, and place the .class file in wickedlysmart.

【正确答案】 D

【答案解析】