A$.$

The white filling in the Oreo cookie was the subject of an international espionage ring that involved five Eastern European countries. The ring leader was eventually caught and imprisoned for $15$ years for replicating the formula and selling it to a Brazilian food products conglomerate.

B$.$

The white filling in the Oreo cookie was the subject of an international scandal that involved two employees of DuPont, the inventor of the TiO$2$ titanium dioxide whitening product that makes the Oreo white filling so white. The two employees sold the formula to the Chinese. They were subsequently caught and imprisoned. They were also ordered to repay this ill$-$gotten money.

C$.$

The white filling in the Oreo cookie was the subject of an international scandal that involved two employees of Oreo, the cookie maker. The two employees created the white filling. However, they signed an invention disclosure form $($IDF$)$ which essentially gave Oreo all rights to this invention. The two employees left in disgust and went on to create the "Mississippi Mud Pie" flavoring which they then sold to Oreo for $$20,000,000.$

D$.$

The white filling in the Oreo cookie was the subject of an international scandal that involved two employees of DuPont, the firm responsible for creating the white cookie filling. The two employees conspired to sabotage the firm by making the white Oreo filling less white. They were convicted and eventually improsoned for $15$ years.