Context: When a chemical reaction absorbs or releases thermal energy, the reaction causes a change in temperature. Read the passage about a chemical reaction that absorbs or releases thermal energy. Then, follow the instructions below.
Some chemical substances explode under pressure. One such substance, nitrogen triiodide (NI3), explodes at even the lightest touch! When this happens, the nitrogen triiodide breaks down to form nitrogen (N2) and iodine (I2). During this reaction, chemical energy is converted to an enormous amount of thermal energy, which is transferred into the surroundings.
Complete the statement.
During this chemical reaction, the air around the reaction becomes ().
A. colder
B. warmer
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

B