Interesting to see that this problem existed in 2009 and people faced issues. I find it difficult to digest that B is the reason and dont find the explanations here convincing either. Here is my logic: Argument : Painting was completed after 1507 and completed before 1509. Key support pillars for th...

Hmm. Thanks but not sure if that helped :)

I had the same thought process too - price is singular. I think that thought process is correct. But, the fact that have risen is redundant eliminates the 'have vs has' conflict. Secondly, their vs the is a collective noun (company management - singular) question. So, I think the key goal in selecti...