Which of the following was not what Monster Year was afraid of according to the legend？（）

A.It is on the ninth day of the ninth month
B.It is on the ninth day of the ninth lunar month
C.It is on the seventh day of the seventh lunar month
D.It is on the eighth day of the eighth lunar month

A.People used to do house cleaning on the 20th day of the 12th month
B.People used to do house cleaning on the 21st day of the 12th month
C.People used to do house cleaning on the 20th day of the 11th month
D.People used to do house cleaning on the 21st day of the 11th month