Title: Learning Piano. Sentence 1: My daughter was trying to learn to play the piano. Sentence 2: She found an app on her tablet that she could use to learn to play. Sentence 3: She wanted to buy the app. Sentence 4: I set a goal for her to reach to buy it. Choices: a. She was able to buy it after reaching her goal in a month. b. But the phone was a prepay, they couldn't identify the caller.
b