Q1: How is RSU amount calculated on W-2. Is it based on closing price? Q2: In TT, for RSU sales, what is "market price on vesting date": sell price or closing price?

Example: 500 shares vested on a given day. Same day, one sells 100 RSU shares at $10 during market hours. The stock eventually closes at $11. What amount should appear on W-2 as RSU income.  In TurboTax, what number one should put to answer the question: "market price on vesting date". $10 or  $11. Thanks in advance.