The question image/reaction scheme and option structures are missing. The prompt only says:

"The major product of the following reaction is"
with options $A, B, C, D$ left blank.

So the actual organic reaction, substrate, reagents, and product options are not available. Without those, the major product cannot be derived chemically.

What can be concluded

1. To determine the major product in an organic chemistry reaction, we need:

   • the starting compound,
   • the reagent(s)/condition(s), and
   • the structures of options $A, B, C, D$.

2. Since none of these are shown, there is insufficient information to solve the problem step-by-step.

3. Although the stored correct answer is given as $C$, I cannot independently verify it from the provided data.

Required next step

Please upload or type the missing reaction scheme and the structures of options $A$ to $D$. Then I can solve it properly and verify whether $C$ is correct.