[单选题]
What is the parallax angle for Proxima Centauri, which is Earth'sh*hvk)c ju/7kxc 3 ws: nearesmkoc9/ .cn u(uw2r v;-xkhj 9it star at 4uw2;.- uxj (c /kcnrv 99okihm.3 ly?
A. $1.2 \times 10^{-14} \; degrees$
B. $2.1 \times 10^{-4} \; degrees$
C. $1.2 \times 10^{-7} \; degrees$
D. $2.1 \times 10^{-7} \; degrees$