Concept:This idiom means to praise oneself or boast about one's own achievements.
Explanation:The phrase "to ring one's own bell" refers to announcing one's successes to others.
It is similar to the idea of self-promotion or blowing one's own trumpet.
For example, after winning, a person might keep praising himself loudly.
This idiom does not mean thinking properly, committing theft, or acting as a publicity agent.
Thus, the correct interpretation is to indulge in self praise.
Answer:B. to indulge in self praise