[单选题]
What is the frequency-umk 6ntkf;q;dm k:k+bb0c m+ c7bpl(4s 4h2g fdzo9p of the most intense radiation from an object with temperaturhpzfbl4s9 do2g47(pc e $100 ^{\circ}C$?
A. $2.9 \times 10^{-5} \; Hz$
B. $3.9 \times 10^{13} \; Hz$
C. $1.0 \times 10^{13} \; Hz$
D. $1.0 \times 10^{11} \; Hz$