[Source or answer dispute] Official B: 'within 10' vs five-day rule

What you will learn

Disputed-question explanation: official result first, then historical evidence, limitations and uncertainty.

Saved original April 2022 exam text (local copy of CBP-authored PDF original-exam.pdf): cover instruction; Exam cover reference list: Title 19 CFR; Question 51 stem as printed (exam PDF page 20 under 'Category IX – Anti-Dumping/Countervailing Duties (AD/CVD)'; rendered temporarily and viewed; 'EXCEPT' printed in bold); Question 51 option A as printed; Question 51 option B as printed; Question 51 option C as printed; Question 51 option D as printed; Question 51 option E as printed; Answer key row 51 (original-key.pdf page 3, rendered temporarily and viewed); 19 CFR 165.24(a) Reasonable suspicion (Part 165 PDF printed page 315, rendered temporarily and viewed); 19 CFR 165.24(b)(1)(i); 19 CFR 165.24(b)(1)(ii); 19 CFR 165.24(b)(1)(iii); 19 CFR 165.24(b)(2); 19 CFR 165.24(c) Notice · April 27, 2022 Customs Broker License Examination, Category IX – Anti-Dumping/Countervailing Duties (AD/CVD) (question 51 on exam PDF page 20, rendered temporarily and viewed); separate 'April 2022 Customs Broker License Exam Answer Key', row 51 on key PDF page 3 (rendered temporarily and viewed). Cover reference: Title 19 CFR revised as of April 1, 2021. Rule text: 2021 19 CFR 165.24 (4–1–21 Edition, printed page 315, rendered temporarily and viewed).
Explained using the historical edition for this exam.