How can an administrator deploy or update an EAR, JAR, WAR, or SAR file to an application server or cluster
in a development environment?

A.
Place the file in the monitored directory.

B.
Place the file in the operating system defined temporary directory.

C.
Place the file in the operating system defined user home directory for the user that owns the Java process.

D.
Email the file to wasadmin@hostname.com, where hotname.com is the host of the IBM WebSphere
Application Server.

Explanation:
You can install an enterprise application file on an application server or cluster by dragging or copying an
enterprise archive (EAR), web application archive (WAR), Java archive (JAR), or Session Initiation Protocol
(SIP) archive (SAR) to a monitored directory.
https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/
trun_app_install_dragdrop.html