2. The mascots of the 2008 Beijing Olympic Games in China consist of 5 "Fuwa", named Beibei, Jingjing, Huanhuan, Yingying, and Nini. There are two sets of Fuwa of different sizes (a total of 10 Fuwa). From the two sets of Fuwa, any 5 Fuwa are selected, and the number of ways to select them such that exactly one is missing to form a complete set of "Olympic mascots" is ( ㄱ) ways.
(A) 160
(B) 320
(C) 32
(D) 120
2.A.

Since $\mathrm{C}_{5}^{1} \mathrm{C}_{4}^{1} \times 2 \times 2 \times 2=160$, the answer is $(\mathrm{A})$.