A) Accordng to the chart, Zuckerberg was slated to sell

Between 8 and 15
Between 24 and 30
Between 42 and 50
times more Facebook stock in dollar value than Mark Pincus, founder of gaming company Zynga, was slated to sell.

B) Based only on the data shown in the chart, the total $ amount of Facebook shares to be sold at IPO, if priced at $35, was closest to 

$5.5B
$10B
$530M