To answer this question, we need to understand the notation used to represent file permissions in Unix-like systems.
In Unix-like systems, file permissions are represented using a set of three characters for each entity (owner, group, and other) that specify the permissions for that entity. The three characters represent the permissions for reading (r), writing (w), and executing (x) the file.
In this question, the second set of three permissions is represented by (r-). The dash (-) indicates that the permission for writing is not granted, while the letter r indicates that the permission for reading is granted.
Therefore, the correct answer is:
Option A) Group has read permission only - This option is correct because the (r-) notation indicates that the group has read permission only. The permission for writing is not granted.