User Joseph has successfully extracted and compiled a program from source code. Installing the binaries produces errors.

What is the most likely reason?

A.
The source code was compiled for a different CPU

B.
The permissions set in the /usr/bin directory are wrong

C.
The binaries require root privileges to be installed

D.
The wrong prefix was used during configuration of the source code

Explanation/Reference:
Normally only the root user has write-privileges on /usr/bin, install binaries only as root.