Under China's new civil code, adopted in May, couples will have to wait 30 days between registering their intent to split for good and actually doing so. Nothing wrong with that, some might argue—many other countries have similar “cooling-off” requirements.该段落中，译文的哪个成分被省略掉不影响句子的真实意思表达？（       ）
A、Under China's new civil code
B、Nothing wrong with that
C、some might argue
D、cooling-off