Which of the following instances of evidence is properly cited?

Question 4 options:

For example, Source 1 says, "Studies have linked nonstop video gaming to such ills as carpal tunnel syndrome1 and tennis elbow, not to mention the current obesity epidemic plaguing this nation's young" (Source 1).


In fact, "Studies have linked nonstop video gaming to such ills as carpal tunnel syndrome1 and tennis elbow, not to mention the current obesity epidemic plaguing this nation's young" (Stein).


In fact, "Studies have linked nonstop video gaming to such ills as carpal tunnel syndrome1 and tennis elbow, not to mention the current obesity epidemic plaguing this nation's young" (Source 1).


According to Source 1, "Studies have linked nonstop video gaming to such ills as carpal tunnel syndrome1 and tennis elbow, not to mention the current obesity epidemic plaguing this nation's young" (Stein).