Sophia, an American, Met Her New Boss from the U

Sophia, an American, met her new boss from the U.K. for the first time and said, "Hello, Simon. Welcome to the team! How long have you been in the States? They must have offered you a lot of money for you to move all the way here, huh?" Which of the major mistakes to avoid at work did Sophia make?

A) Making fun of people
B) Oversharing
C) Overlooking cultural differences
D) Gossiping