Karen measures the volume of gas at 200 K and 100 kPa. To correct her measurement to standard temperature and pressure (STP), what must she do?
A. make a volume correction based on a higher temperature of 273 K
B. make a volume correction based on a higher pressure to 200 kPa
C. make a volume correction based on a lower temperature of 73 K
D. make a volume correction based on a lower pressure of 50 kPa
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