“In English, there are typically around 16 vowel sounds, though the exact number may vary somewhat depending on dialect and accent. It is required to use a special alphabet to express the pronunciation of English words, as the normal English alphabet does not have suitable different letters to represent all the sounds of the language. This singular alphabet is called phonetic alphabet. You can identify these pronunciations by the slashes before and after a phonetic symbol.” Adapted from: TRINDADE, A. M. I. S. Rota de Aprendizagem Inglês X - aula 4. Curitiba: Intersaberes, 2024. Considering the paragraph above and the base text of English X, Lesson 4, Theme 5, on vowel sounds, choose the correct alternative. A /e/ is a phonetic symbol. B The pronunciation of the word ten can be represented by /tæn/. C Sounds do not vary in English. D The paragraph above summarizes all English sounds.