How Does the Competition Act Prohibit Price-Fixing

How does the Competition Act prohibit price-fixing

A) Competing executives cannot even talk about fixing prices.
B) Competing executives can talk about fixing prices, but they cannot take action to fix prices.
C) A price-fixing agreement can lead to prosecution provided the government can show that the public was not well-served by the agreement.
D) Activities such as bid rigging price discrimination and predatory pricing are all subject to prosecution but resale price maintenance is allowed.