Which of the Following Statements Is True

Which of the following statements is true?

A) Production in a perfectly competitive market is efficient because resources in the market leave those sectors in which price cannot cover their costs of production and enter those sectors in which price can cover their costs of production.
B) Production in a perfectly competitive market is suboptimal because the absence of free entry and exit of firms allows firms to specialize in only one particular industry.
C) Production in a perfectly competitive market is Pareto inefficient because the government or a central planner carefully analyzes the needs and requirements of society and instructs firms on what to produce and in what quantity.
D) Production in a perfectly competitive market is Pareto efficient because the government or a central planner carefully analyzes the needs and requirements of society and instructs firms on what to produce and in what quantity.