Given below are four jumbled sentences. Select the option that gives their correct order.

A) Each month in the modern Gregorian calendar consists of at least 28 days.

B) To fully sync the calendar with the lunar year, the Roman king Numa Pompilius added January and February to the original 10 months.

C) That number would be a nicely rounded 30 were it not for February.

D) It was altered after Numa’s addition including the shortening of February at certain intervals, and the addition of a leap day. February’s 28-day length has stuck.