Which sentence best describes how Alexa changes in "The Sound of Spring"? A. Alexa feels relaxed while at home but then becomes anxious on her way to the park. B. Alexa feels bored until her sister agrees to take her to the park, and her spirits rise. C. Alexa feels gloomy until she hears guitar music and gets excited. D. Alexa feels inexperienced until she learns to play the guitar.