What are the three variants of the F-35?

The three variants of the F-35 are indeed the F-35A, F-35B, and F-35C. Each variant is designed to meet different operational needs and requirements of various branches of the military.

The F-35A is the conventional takeoff and landing (CTOL) variant, primarily used by the United States Air Force. It is optimized for air force operations, featuring a more traditional landing gear and wing configuration.

The F-35B is the vertical takeoff and landing (STOVL) variant, which allows operations from shorter runways and even directly from the deck of an aircraft carrier. It is utilized by the United States Marine Corps and other allied forces needing versatility and flexibility in deployment.

The F-35C is the carrier variant, specifically designed for the U.S. Navy's aircraft carrier operations. It has larger wings and strengthened landing gear to handle the stresses of carrier landings and takeoffs, along with greater fuel capacity for longer missions.

These distinctions illustrate the unique capabilities and functions of each variant, making the first choice the only correct selection among the provided options. The other options list variants or classifications that do not correspond to officially recognized F-35 designs.