形容过时的东西，正确的说法是？
Which is the CORRECT idiom for something outdated?
全球翻车率（内测预估）
✓明日黄花
míng rì huáng huā · yesterday's news, past its moment
B隔夜黄花
gé yè huáng huā · day-old chrysanthemum
C昨日黄花
zuó rì huáng huā · "yesterday's chrysanthemum" — a common misquote
D去年黄花
qù nián huáng huā · last year's flowers
重阳节“明日”再看菊花就蔫了——所以是明日黄花。写“昨日黄花”的人，本身就是明日黄花。
明日黄花 (“tomorrow's chrysanthemums” — wilted after the festival) = outdated. Many natives write 昨日黄花, which is itself the error.