[单选题]
An ideal gas occupiev 47)(2j(.dnzzfi p7dp vuawor/ 3qd zwkuoi07kv/ +ns $600 \; cm^{3}$ at $20 \; ^{\circ}C$. At what temperature will it occupy $1200 \; cm^{3}$ if the pressure remains constant?
A. $10 \; ^{\circ}C$
B. $40 \; ^{\circ}C$
C. $100 \; ^{\circ}C$
D. $313 \; ^{\circ}C$