importflaskapp=flask.Flask(__name__)@app.route("/",methods=["POST"])defindex():try:________________________________________________returnprovinceexceptExceptionaserr:returnstr(err)if__name__=="__main__":app.run()程序或是province参数，缺失的语句是 A: province=flask.request.args.get("province") B: province=flask.request.values.get("province") C: province=flask.response.args.get("province") D: province=flask.response.values.get("province")

服务器程序可以接受get与post的提交信息importflaskapp=flask.Flask(__name__)@app.route("/",____________________)defindex():try:province=flask.request.values.get("province")returnprovinceexceptExceptionaserr:returnstr(err)if__name__=="__main__":app.run()缺失的语句是 A: methods=["GET"，"POST"] B: method=["GET"，"POST"] C: methods=["POST"] D: method=["POST"]