richardle wrote:If you find that Statement (1) is not sufficient but Statement (2) is sufficient, is the correct answer always B?
Yes, "B"

What if you combine Statements (1) and (2) and the statements together are sufficient?
We always give priority to Statement 1 & 2 "alone". After testing Statements 1 & 2 "alone" we find that we can conclude an answer.. we mark "A" or "B" or "D"(if both statements are sufficient").
If we cannot find any concrete solution from statements separately, then we combine.. if combining results in concrete answer.. mark "C".. else "E"

A --> When only Statement 1 is sufficient
B --> When only Statement 2 is sufficient
C --> When both the statements combined are sufficient
D --> When both the statements alone are sufficient
E --> When combining of the statement still doesn't provide any concrete answer

Always use AD/B/CE approach for DS questions:

Here is a quick flowchart for the same:
Direct Link: AD/B/CE approach
(let me know if you need some more elaborate steps)

Key points: Always start with statement (1), Figure out the target question before hand, Simplify the given information if possible.

richardle wrote:If you find that Statement (1) is not sufficient but Statement (2) is sufficient, is the correct answer always B?

What if you combine Statements (1) and (2) and the statements together are sufficient?

So referring to the above flow chart, the moment you reach an ANSWER you have to stop. If (1) is NOT SUFFICIENT and (2) is sufficient you stop at B.

Thank you all