HARD ex wrong question or what am I missing

GRE Quant Problem Solving
1

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The video says C is right, but the question gets corrected and has a comment that D is correct because p.B can be manipulated without disrespecting the criteria given? How?

2

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If you’re talking about this question then yes C is right

3

https://www.reddit.com/r/GRE/comments/1kiewh6/gregmat_timed_q_practice_hard_sect_2_sample_1_and/

Yes, you’re right and this has been fixed.