B

Step 1: Understanding specific heat: Specific heat is defined as the amount of heat required to change the temperature of a unit mass of a substance by one degree Celsius (or one Kelvin). It is generally a positive value for real substances.
Step 2: Considering ideal gases: For ideal gases, the specific heat capacity can be defined at constant pressure (C_p) and constant volume (C_v). For most known substances, specific heat values are positive.
Step 3: Theoretical considerations: While theoretically, specific heat could take negative values in some highly unusual or non-physical contexts, in practical terms and in the context of real gases, the specific heat cannot be infinite or negatively infinite.
Conclusion: Therefore, the statement that the specific heat of a gas can lie between –∞ and + ∞ is incorrect, as specific heat values for real gases are positive and do not approach infinity.
Therefore, the correct answer is B.