Which of the following statements regarding the connections between phonetics and phonology is true? <br/> A、Phonology focuses primarily on individual languages, while phonetics is a more general study of speech sounds.<br/> B、Traditional phonological studies analyze the modern phonetic system and its most prominent characteristics.<br/> C、Vowels and consonants have the same phonetic properties in both Chinese and English, and are studied in phonetics.<br/> D、Studying the evolution of historical sounds is a vital part of phonetics as it promotes a better understanding of speech sounds.