Put the sentences (a-c) in the correct order, then fill in the blank to make a logical text

Put the sentences (a-c) in the correct order, then fill in the blank to make a logical text.
Preparing for Tet is a busy time for my family. ________
a. This is to sweep away bad luck and receive good fortune.
b. First, we start cleaning and decorating the house together.
c. Then, we shop for new clothes and food for the holiday.
A. a-b-c
B. c-b-a
C. b-a-c
D. a-c-b