This is a pure recall question about landmark IT outsourcing contracts from the mid-2000s, so the fastest way through it is process of elimination using what is confirmed and widely reported.
Three of the four options describe deals that are firmly established in business reporting from that period. The one that breaks the pattern is the Infosys pairing, since it cannot be matched to a genuine, confirmed billion-dollar contract.
Let's summarize:
So the deal that is not genuine on this list is option (C).