Hello I got the wrong answer and I just want to know the correct one for review since the homework is already finished, Thank you.

An economy consists of four workers who can produce snowboards or bicycles. The following table shows the daily maximum output of each worker. For example. Armen can produce up to 8 snowboards or 5 bicycles per day. This economy's production possibilities frontier is Maximum Output of Maximum Output of Snowboards (unilsfday) Bicycles (unilsfday) positively sloped and concave to the origin [or curved outward). negatively sloped and concave to the origin [or curved outward}. negatively sloped and linear. {0:} positively sloped and linear