Context: Read the passage and look at the picture.
The East Pacific Rise is a massive underwater mountain range. It stretches from Mexico's Gulf of California almost all the way to Antarctica. The northernmost part of the East Pacific Rise is where the North American Plate and the Pacific Plate are moving away from each other, carrying the Baja Peninsula farther from mainland Mexico. The East Pacific Rise is growing quickly. The two plates are moving apart at a rate of 6 to 16 centimeters per year!
Complete the sentence.
The East Pacific Rise formed at a () boundary.
A. divergent
B. transform
C. convergent
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

A