Read the following context and choose the best option to answer the question.
Context: It will take around 3 months to tell if the supplements are doing their jobs . I ' ve got my fingers crossed that they will and I 'll feel much better . I think the pH issue is also a big problem and I hope it comes into balance as well in the 3 months . Weight loss is of course one of the goals of all this , but I think that getting my body balanced is the key .
Question: What will happen after 3 months ?
Options: 
A. None of the above choices .
B. They will fail for sure , no chance of them working .
C. I wo n't know if they worked or not .
D. I 'll be able to tell if they worked or not .


D