HUGE question about Bio E/M scoring

<p>Ok, so when I registered for the SAT Bio, I picked E (on the internet). However when I took the test, I did M and wrote test name as such in corner of paper. When I got my scores back, it reported my score as Bio E. Is it possible that it graded the E (which I left completely blank) instead of the M, even though I wrote the test name as such on answer sheet?</p>