Question:  NAME_1 and NAME_2 postulate that social media
A: has contributed to the rise of vindictive protectiveness.
B: has helped to combat the rise of vindictive protectiveness.
C: shifted the balance of power between students and professors.
D: Both A and C
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. The response should be in all capital letters.
user