This is how I analysed the answer choices. A) as either (EB) or (DC) B) either as (EB) or (DC) {"as" is missing before DC} C) as either (EB) or as (DC) {"as" is placed before either} D) as either (EB) or as (DC) {"as" is placed before either} similar to choice C E) eith...

A

Argument didn't mention about the overhead costs of SFRC. So, remaining 20% accounts for overhead costs?
Confused

C

E

Is the question about finding "all assumptions supporting EXCEPT one."

Confused

Nitin, Hope you follow this explanation. If (a,b) and (c,d) are equidistant from origin, a^2+b^2=c^2+d^2 . 1) ad=bc 2) sqrt(a^2)+sqrt(b^2)= sqrt(c^2)+sqrt(d^2) => a+b=c+d => b(a+b)=b(c+d) Here multiply both the sides with "b" => b(a+b)=bc+bd => b(a+b)=ad+bd Here substitute bc=ad from 1) =>...