Identify the molecular orbital energy diagram for the cyclopropenyl anion, shown in the box below, and predict if it is aromatic, antiaromatic, or nonaromatic.
◦ molecular orbital energy diagram (I); aromatic
◦ molecular orbital energy diagram (II); aromatic
◦ molecular orbital energy diagram (I); antiaromatic
◦ molecular orbital energy diagram (II); antiaromatic
◦ molecular orbital energy diagram (I); nonaromatic