Solutions
S1: FOG is written as '265' and DISH is written as '3184'.
Using this statement alone we cannot define the code for DRAW.
So, S1 alone is not sufficient to know the code for DRAW.
S2: RAW is written as '709'.
Using this statement alone we cannot define the code for DRAW.
So, S2 alone is not sufficient to know the code for DRAW.
If we combine both the statements,
We can say the code for letter D is '3', R is '7', A is '0', and W is '9'.
Thus, we can say that the code for DRAW is '3709'.
Therefore, "S1 and S2 together are sufficient to answer the question" is the correct answer.