Which country controls the strategically vital Strait of Hormuz at its northern narrow choke point?

The Strait of Hormuz is a critical waterway connecting the Persian Gulf to the Arabian Sea and the Indian Ocean. It is bordered by two countries. To the north, the strait is controlled by Iran. To the south, it is controlled by Oman's Musandam Governorate. Since the question specifically asks about the northern narrow choke point, the correct country is Iran.

B. Iran
$\text{B. Iran}$