When the same fixed amount of gas is altered in two ways simultaneously, which two changes produce the greatest increase in the gas volume?
- Achange in pressure: decrease by $10\%$, change in temperature: decrease by $10\%$
- Bchange in pressure: increase by $10\%$, change in temperature: decrease by $10\%$
- Cchange in pressure: decrease by $20\%$, change in temperature: increase by $10\%$
- Dchange in pressure: increase by $20\%$, change in temperature: increase by $10\%$