Hello! I'm currently taking the S1 exam and on question 17 it asks to state weather a part of a flight strip/plan is correct or incorrect. The first part is asking if the callsign is correct. In the question, it is worded as "DELTA12". Technically this is how it's said, but the real callsign is "DAL". I'm not sure weather the answer to the question would technically be correct since it is said the same, or wrong since it would actually display DAL instead of DELTA. Thanks!