题目：输入某年某年某月某日，判断这一天是这一年的第几天？'''需求：判断输入的日期是本年的第几天思路：以3月5日为例，应该先把前两个月的加起来，然后再加上5天即本年的第几天，特殊情况，闰年且输入月份大于3时需考虑多加一天：'''year = int(input('year:\n'))month = int(input('month:\n'))day = int(input('day:\n'))months = [0,31,59,90,120,151,181,212,243,273,304,334]if 0 <= month <= 12:#判断输入的月份sum = months[month - 1]else:print('data error')sum += dayleap = 0if ________________________________:#判断是平年还是润年leap = 1if (leap == 1) and (month > 2):sum += 1print ('it is the %dth day.' % sum)

A. (year % 400 == 0) or ((year % 4 == 0) and (year % 100 != 0))
B. (year % 400 = 0) or ((year % 4 = 0) and (year % 100 != 0))
C. (year % 400 == 0) and ((year % 4 == 0) and (year % 100 != 0))
D. (year % 400 == 0) and ((year % 4 == 0) or (year % 100 != 0))