Maymart Inc. sells its products at the lowest prices in the industry, and it believes that this is the best way to stay ahead of its competition. It has also not compromised on the quality of its products because its suppliers and vendors sell the best quality raw materials at the lowest prices. In the context of Porter's positioning strategies, which of the following strategies has Maymart adopted?

a$.$ Differentiation strategy

b$.$ Cost leadership strategy

c$.$ Diversification strategy

d$.$ Price$-$fixing strategy