[单选题]
An ideal gas occupies 300 L)5jv.nos) znw7 bx.rp at an d ut. u4i/kmtc00o5vs absolute pressure of 400 kPa. Find the absolute pressure if the volume changes to 850 L anducmos0di /t45t .0vuk the temperature remains constant.
A. $140 \; kPa$
B. $640 \; kPa$
C. $850 \; kPa$
D. $1140 \; kPa$