[单选题]
Four different main-sequence stars are colored blue, odi.9zg 2 x/ az)sgzdc:-aoh+mrange, red, and yell s 2pn xcrsj)q9;6a(xiow. What is their ranq6rjsix;2nx( csp)9 ak from coolest to hottest?
A. blue, yellow, orange, red
B. orange, blue, yellow, red
C. red, orange, yellow, blue
D. red, yellow, orange, blue
