Can you predict some contents from these titles? Please choose the possible information below.根据题目猜测可能的信息TitleThe Decline of Postal Service A: what kind of service? B: what does postal service do? C: what is the goal of service? D: are modern technologies possible to assistant postal service?reasons for the decline? E: do i have relative vocabulary to the topic? F: how to improve the postal service? G: what caused the decline? H: Is good to use postal service