I submitted a short (10 page long) manuscript to a math journal. It has been 9 months. Almost 4 months ago I emailed them to see what's going on. Their response was: "Your paper has been sent out to review but we haven't heard back".
What are the options at this point? The journal is one of the best in the field but at the same time I'm concerned thaat I might wait a long time just to receive a rejection letter.