It IS allowed to think before posting. If not thinking, then actually doing just the basics of reading up on what Merck has done, does and is doing with regards to Keytruda.
Knowing your allegiance to a certain pay cheque though, I can not say that I am surprised of your deduction technique.
Deduction: A process of reasoning that starts with a general truth, applies that truth to. a specific case (resulting in a second piece of evidence), and from those two pieces of evidence (premises), draws a specific conclusion about the specific case.