[单选题]
An ideal gas occupies 300 L at an absolute poc6:4g+g:ct+lxy 5 )ksbbryg ressure of 400 kPa. Find the :w)hdo+m rx9y absolute pressure if the volume changes to 850 L anw)xy: 9ro m+hdd the temperature remains constant.
A. $140 \; kPa$
B. $640 \; kPa$
C. $850 \; kPa$
D. $1140 \; kPa$
