Martin runs a successful house painting business. He runs his business out of his garage, which he got converted into an office space. Martin, who had previously worked as a house painter in another company had good know-how of how to run a house-painting business. After a storm destroyed public properties in his neighboring town, he contracted with the mayor of that town to fulfill any painting jobs required during the town's reconstruction. In order to meet this demand and expand business, he hired more house painters. According to the BRIE model, which of the following is an example of Martin's resource competency?
A. Martin hiring more house painters to meet demand
B. Martin contracting with the mayor to help paint during reconstruction
C. Martin setting up the business's office in his garage
D. Martin having prior knowledge of the house-painting business