sales of brands

I have a pie chart whose data given like below


Percentage share of various brands in the diaper market :


Others =10 %

Brand C= X%

Brand B =Y%

Brand A =15%

Home Made= 50%


Note : sales of Brand B and Brand C are in the ratio 3:2 and 2% of the population uses home-made diapers






Question :

when we say Brand A = 15 % above ...what it means ?

does it mean 15 % of population uses brand A ?

does it mean 15 % of the total diapter used by the population is Brand A

does it mean sales of brand A is 15% in overall sales ?

or what would be the correct way of interpretation ?


can anybody explain it ..please

thank you