Which of the Following Represents a Competitive Intelligence Practice That

Which of the following represents a competitive intelligence practice that is both legal and ethical?

A) A firm hires a competitor's employees and asks them to share the names and addresses of business contacts from their previous company.
B) An executive attends a trade show solely to obtain a competitor's brochures, listen to sales pitches, and ask questions about the competitor's products.
C) A city council member shares information about the decision process for selecting a contractor to build a new city council building with his wife, an executive with a construction firm bidding on the contract.
D) A marketing manager sells confidential plans for a company's expansion into the Far East to a firm that is not a direct competitor.