Nefarious Inc and Jaffar Together Control 90 Percent of the Market

Nefarious Inc and Jaffar together control 90 percent of the market for artificial hearts. Nefarious and Jaffar have committed an offence under the Competition Act if they

A) agree to limit their production of artificial hearts for the purpose of driving up prices of their products.
B) agree in advance on the bids each will submit for a contract to supply artificial hearts to a hospital.
C) agree to limit their sales of artificial hearts for the purpose of driving up prices for their products.
D) agree on the prices that they will charge their customers.
E) all of the above.