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 will not be held to have committed an offence under the Competition Act if

A) they agree on the prices that they will charge their customers.
B) they agree to limit their production of artificial hearts for the purpose of driving up prices of their products.
C) they agree in advance on the bids each will submit for a contract to supply artificial hearts to a hospital.
D) they agree to limit their sales of artificial hearts for the purpose of driving up prices for their products.
E) the evidence against them does not establish their guilt beyond a reasonable doubt.