Friends,

                   Below is  a mock test question. Shouldn't be the answer be "C" as per Rita's Book. The actual answer seems to be D which I doubt.

Secondly whenever these kind of questions come in the exam, do we specifically need to look for the impact on triple constraints in the choices,else go for the next option,leaving out the option with impact on only constraint as given below. How do we approach this. Help please!!!!!