Which of the following is least likely to be classified as a tactical decision?

A) Buying a new factory.
B) Outsourcing factory security.
C) Discontinuing an unprofitable product model.
D) Selling or disposing of a by-product

Buying a new factory is a strategic decision, as it involves a long-term commitment and has a significant impact on the company's overall goals and resources. Tactical decisions are usually shorter-term and less impactful, such as outsourcing security, discontinuing a product model, or disposing of a by-product.