Saudi Arabia is named after the ruling family: the Saud family.
This family goes back to 18th century, and one of its members gained control of the Arabian Peninsula and founded a kingdom:
His name was Abdulaziz Ibn Saud. In the Arab world, he's known mostly as Abdulaziz and in the western World as "Ibn Saud".
He came up with what is known as the New Jersey Plan. It benefited the
smaller states with the plan to have representation based equal as a
larger state.
I would say A.
but C would be my second guess
