A bubble containing a fixed amount of ideal gas is released deep underwater at a depth where the total pressure is \(3P_0\). As the bubble rises to the surface where the ambient pressure is \(P_0\), its volume expands from \(V_0\) to \(2V_0\) while absorbing thermal energy from the surrounding water.

Option	Ratio \(\dfrac{T_f}{T_i}\)	Internal Energy Change \(\Delta U\)
A	\(\dfrac{3}{2}\)	Positive
B	\(\dfrac{2}{3}\)	Negative
C	\(\dfrac{2}{3}\)	Positive
D	\(6\)	Positive

Which entry in the table correctly identifies the ratio of the final absolute temperature to initial absolute temperature, \(\dfrac{T_f}{T_i}\), and the sign of the change in internal energy, \(\Delta U\), of the gas in the bubble?