three labelled boxes containing red and white balls are mislabeled.it is known that one of the boxes contain only white balls and one only red balls.Third contains mixture of red and white balls.you are required to correctly label the boxes with labels red,white and red and white by picking a sample of one ball from only one box.what is the label on the box you should pick.
a) white
b)red
c)red and white
d)more than one sample is required