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a. It is easy to write down specs of a productb. products are well known for their qualityc. it is required to evaluate among several manufacturer's productsd. low cost products are to be purchased
A customer always compares (smart phone Samsung / Apple / HTC / Sony etc) several same class products, before going for one in particular. So Option (c) appears me to be right answer.
C as it is the mean of brand product means ,,
Correct answer is option b) <<<<<<<<<<<<<
I would say B: Products that are well know for their quality.
Dear Wasi, I assume you mean specification by brand on the RFQ
in case yes, b. products are well known for their quality and this specific brand matches the customer requirement
Also this is needed only when you are buying from multiple local retailers and not direct from the manufacturer / exclusive agent of the specified brand.
c. it is required to evaluate among several manufacturer's products
>>>>>>>>>>> My answer will be option c. it is required to evaluate among several manufacturer's products.