According to API Std 936, the quality control program includes several essential elements to ensure compliance with material specifications and installation procedures. These elements include:
"Key quality control activities include, but are not limited to: material qualification testing, initial inspection, installation monitoring, and as-installed testing."
- API Std 936, Section 4.1, Quality Control Program
Although documentation is essential, report writing is not listed as a core quality control element within this section. Therefore, A, B, and C are the correct answers.