Answer:
A) First-mover advantage
Step-by-step explanation:
Adoption of a new supply chain management by Rectang Corp improving its sales delivery ahead of its competitors hence a source of competitive edge. The company being the industry leader shows that the new innovation is providing Rectang Corp the benefits of a first-mover before the competitors follow suit. Therefore, a firm that acts first and builds on its supply and sales on before other firms, enjoys the first-mover advantage.