What must be filed along with the inspection sticker or decal numbers?

Answer: B — Pink copies of the MVI-2 form

Filing the pink copies of the MVI-2 form along with the inspection sticker or decal numbers is essential for maintaining accurate records of vehicle inspections. The MVI-2 form serves as a detailed report of the inspection results, including any issues that were found or addressed during the inspection process. By linking this form directly with sticker or decal numbers, it allows for proper tracking and verification of the vehicle's inspection history. This documentation is critical for both regulatory compliance and for providing assurance to vehicle owners regarding the legitimacy of the inspection performed. While keeping track of repair invoices, inspection results, and customer complaints can be important for the overall management of an inspection shop, they are not specifically required to be filed with the inspection sticker or decal numbers. The pink copy of the MVI-2 form is particularly specified for this purpose, ensuring a clear and organized process for vehicle inspections in Missouri.