Luis Contractually Agreed to Sell a Widget to Monica for $20

Multiple Choice

Luis contractually agreed to sell a widget to Monica for $20 000.Monica accepted delivery of the widget, but has paid only $13 000.Although neither party realized it when they created their contract, the widget is actually worth $23 000.A court will order Monica to pay Luis

A) $10 000.
B) $7000.
C) $20 000.
D) $13 000.
E) $23 000.