<p>Here is a sentence correction problem from McGraw-Hill's SAT book:</p>
<p>Generally regarded as the most influential social science treatise of the 20th century, [John Maynard Keynes wrote a book, "The General Theory of Employment Interest and Money" that] forever changed the way scientists looked at the economy.</p>
<p>C) [John Maynard Keynes' book "The General Theory of Employment Interest and Money had already]</p>
<p>E) [John Maynard Keynes' book "The General Theory of Employment Interest and Money]</p>
<p>I narrowed the question down to two choices, of which I think one of them is obviously the correct answer. However, the answer the books states otherwise...</p>