Read the passage.
Margot has grown so sweet; she seems quite different from what she used to be, isn't nearly so catty these days and is becoming a real friend.
Which identifies the tone of the passage and analyzes how it is created?
A. The tone is frustrated; words such as catty and friend are used to show this by suggesting that Margot is two-faced.
B. The tone is surprised; words such as different and becoming show this by demonstrating a change in Margot's behavior.
C. The tone is happy; words such as sweet and catty establish this by showing Anne is becoming more upbeat as spring approaches.
D. The tone is loving; words such as quite and days show this by suggesting that Anne loves her sister, in spite of their differences.