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  1. Fact 1: Eyeglass frames cost between $35 and $350.
    Fact 2: Some eyeglass frames are made of titanium.
    Fact 3: Some eyeglass frames are made of plastic.
    If the first three statements are facts, which of the following statements must also be a fact?
    I: Titanium eyeglass frames cost more than plastic frames.
    II: Expensive eyeglass frames last longer than cheap frames.
    III: Only a few eyeglass frames cost less than $35.

    2. A.
    I only
    B.
    II only
    C.
    II and III only
    D.
    None of the statements is a known fact.

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    Answer : Option D

    Explanation :

    There is no information in the facts to support statements I or II. Statement III is clearly wrong because, according to Fact 1, no frames cost less than $35.

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