This question checks basic awareness of major global tech acquisitions and their reported deal size.
17 billion: this was an early rumored figure before the final agreement was announced, not the confirmed deal value.
18 billion: close to the actual number but it undercounts the stock and restricted stock unit part of the deal.
19 billion: correct. In February 2014, Facebook announced it would acquire WhatsApp for about 19 billion US Dollars, made up of cash, Facebook shares, and restricted stock units for WhatsApp employees.
20 billion: this figure is too high, it is sometimes confused with other large tech mergers from the same period.
The correct option is C, 19 billion US Dollars, the reported value of the Facebook-WhatsApp deal in 2014.