King John was forced to put his seal to Magna Carter__________．

King John was forced to put his seal to Magna Carter__________．
A、on July 9,1215
B、June 19.1215
C、June 14,1381
D、July 15,1318
【正确答案】：B
【题目解析】：约翰王在1215年6月19日被迫在大宪章上盖章。