Read the passage and answer the question.
One day an army group won a lond battle against the enemy. The commander feared that the enemy's powerful air force might bomb his camp that night in revenge. So he ordered all lights to be put out at 7:00 PM. At midnight the comman went round inspecting the camp. Seeing a light in a tent, he entered it. His son, an officer under him, was writing a letter. The son explained that he was writing to his mother about his brave deeds in battle. The commander told his son to add to his letter that by the time his mother received the letter he would have been shot dead for indiscipline.
The son was writing a letter because he

Options

A. wanted to write to his mother about his father's brave deeds in battle
B. loved his mother so much that he had to write to her
C. was eager to tell his mother about his own deeds
D. did not care for orders since his father was the commander