Vignesh,
thank you for the post. Kudos to you for that. Next time around if you could hide the selected and the correct answer choices, it would be awesome. (You can use paint to erase off the radiobuttons for all the options, or just cut the radio button column off). That way you would get a lot of unbiased reasoning for each option.
As for this question:
a) Is not correct as the info says "no. of PCs sold didn't change much".
b) Is out of scope as the question is about computer sales only.
c) This actually is opposite of what is being said. If more ppl were buying stuff from competitors then the profits would actually go down given that number of PCs sold and prices were stable.
d)Yup. the answer. Since the proportion of first time buyers was smaller last year than the previous year, and given that the number of PC's sold were higher, it means that PXC sold more high profit PCs last year than the previous year. That explains.
e) We cannot say this for sure. No info abt production costs is given.
Thanks.