Concept:Talaq al-bai'in is a type of divorce in Islamic law.
Explanation:Talaq al-bai'in means a final and irrevocable separation between husband and wife.
It takes effect immediately and completely terminates the marriage.
After this divorce, the couple cannot remarry each other without a fresh marriage contract and a new dowry.
This is different from a revocable divorce, where reconciliation is possible during the waiting period.
It is not related to the bride being new, a court order, or the state of impurity.
Answer:C. An irrevocable divorce