Prints from photo sets 002 - 007 can not be printed larger than 5x7 . Additionally , prints can not be made from photo set 001 due to the unconventional ( read : inconvenient ) sizes of the photos in that set . If you know the subject of the print(s ) you 'd like to order , it may be easier to look at the tags for the photo posts .
According to the above context, choose the best option to answer the following question.
Question: Why are the photos so difficult to see ?
Options:
A. Their dimensions are normal .
B. The photo is black and white .
C. The photo is scratched .
D. Their dimensions are off .


D