Context: Read the passage and look at the picture.
The Queen Charlotte Fault marks a boundary between the Pacific Plate and the North American Plate. The two plates slide past each other along this fault, which lies off the west coast of British Columbia, Canada. A magnitude 8.1 earthquake occurred along this fault in 1949, forming a crack in Earth's crust over 500 kilometers long.
Complete the sentence.
The Queen Charlotte Fault formed at a () boundary.
A. convergent
B. divergent
C. transform
Identify the correct choice from the options below and respond with the letter of the correct option.

C