Static Testing techniques, such as reviews, can be undertaken before Dynamic Testing, making defects cheaper to remove. This is because static testing involves examining the code, requirements, and design documents without executing the code, allowing for early detection of defects. Early detection is typically more cost-effective because it prevents the propagation of defects into later stages of development, where they are more costly to fix. In contrast, dynamic testing requires the execution of code to find defects, which often occurs later in the development process.