[单选题]
98.05: Which of the following t:- r6 5gyk-yc6 aw+ fikv8.hr h lrqfp91nf6qtemperatures would be s ibbr/y,f(6wl ti6b2 most appropriate to keep milk at inside a refrigeras,wbf2lbt6 i /yi b6r(tor?
A. $-20^{\circ}C$
B. 5 K
C. $40^{\circ}C$
D. 278 K
E. 350 K