租车问题：野外考察活动用车方案

某校准备组织520名学生进行野外考察活动，行李共有240件。学校计划租用甲、乙两种型号的汽车共12辆，经了解，甲种汽车每辆最多能载50人和15件行李，乙种汽车每辆最多能载40人和25件行李，设租用甲种汽车x辆，你认为下列符合题意的不等式组是（   ）．

A certain school is preparing to organize 520 students for a field trip, and there are a total of 240 pieces of luggage. The school plans to rent a total of 12 cars of two models, A and B. According to the information obtained, model A cars can carry a maximum of 50 people and 15 pieces of luggage per car, while model B cars can carry a maximum of 40 people and 25 pieces of luggage per car. Let's assume that x cars of model A are rented. Which set of inequalities below is consistent with the given conditions?