I have troubles with graphs as is, but I also don't understand long run/short run, how would I figure out the answer on my own?

Q: Using the figure below, indicate at which price(s) Jane will continue to operate in the short run. Assume the custom bicycle market is perfectly competitive. You may select more than one option. Jane's Custom Bicycle Shop - Important Costs $4,000 Costs MC $3,500 $3,000 $2.500 ATC $2,000 AVC $1,500 $1,000 1 10 15 20 25 30 35 40 45 50 55 60 65 Quantity (Q) Select one or more: O a. $1,500 O b. $1,200 O c. $2,000 O d. $2,500 Check