When bash is invoked as an interactive login shell, which of the following sentences is true?
A. It first reads and executes commands in /etc/profile and then does the same for ~/.bash_profile and ~/.bashrc.
B. It first reads and executes commands in /etc/bashrc and then does the same for etc/profile.
C. It reads and executes commands in ~/.bashrc only if /etc/profile or another initialization script calls it.
D. It ignores /etc/profile and only reads and executes commands in ~/.bashrc.
E. It first reads and executes commands in /etc/profile and then does the same for ~/.bash_profile, ~/.bashrc and ~/.profile.