What is the difference between an Access Control List $($ACL$)$ and an Access Control Matrix $($ACM$)$

Question $3$ options:

ACL is a set of permissions that is attached to an object. An ACM is a table of subjects and objects and what actions individual subjects can take upon individual objects

There is no difference. These terms are interchangeable.

ACM is a set of permissions on a set of individual objects. An ACL is a list of subjects and objects and what actions each subject can take on each object.