Why option "E" wrong?... tests..compared to tests

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by [email protected] » Thu Mar 20, 2014 9:34 pm

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Source: Beat The GMAT — Sentence Correction | Thu Mar 20, 2014 9:34 pm

theCodeToGMAT: Legendary Member; Posts: 1556; Joined: Tue Aug 14, 2012 11:18 pmFollowed by: 34 members; Thanked: 448 times; GMAT Score:650

by theCodeToGMAT » Thu Mar 20, 2014 11:44 pm

The problem with {E} is that the part between commas "diseases that typically.." seems to give a false meaning that diseases rather than tests are costing less than 100$

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by [email protected] » Fri Mar 21, 2014 12:06 am

Hi mukherjee.tanuj3,

This SC is built on Comparison and Modification rules:

1) Comparison - the word "unlike" at the beginning of the sentence tells us that we'll have to compare similar things that differ in some way. 3 of the answers make an improper comparison:

Answer A: compares "many routine tests" with "many newly discovered genetic defects"
Answer B: compares "diabetes or high cholesterol" with "tests"
Answer C: compares "diabetes or high cholesterol" with "tests"
Answer D: compares "routine tests" with "tests"
Answer E: compares "routine tests" with "tests"
Eliminate A, B and C

2) Modification - the "tests" are what cost money, not "the diseases". Eliminate E.

Final Answer: D

GMAT assassins aren't born, they're made,
Rich

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