I have a question regarding the pronoun "those" in "...near to those he most trusted." Here "those" refers to "town". According to the Strategy Guide Page 83, "If you must change number, repeat the noun". I think we should use "the towns" i...

I think there is some problem with this question: counter-example "x = y = a = 0" leads to an answer of NO. So even (C) is INSUFFICIENT to answer YES. Even if we modify the question such that "If a is positive", the correct will NOT be (C). Instead, (A) will be the correct answer...