子入太庙，每事问。或曰：“孰谓鄹人之子知道礼乎？入太庙，每事问。”子闻之，曰: “是礼也。”文中的两处“礼”最佳英译为：

A、Matters of
ritual; a rule of propriety;
B、the rules of propriety;
a rule of propriety;
C、matters of ritual; the ritual;
D、Observing ritual propriety; the correct rite