给定3个不同大小的字典，我如何找到交叉点和值？

def find_cross_points(dictA, dictB, dictC):
    cross_points = {}
    for key in dictA.keys():
        if key in dictB and key in dictC:
            cross_points[key] = [dictA[key], dictB[key], dictC[key]]
    return cross_points

# 示例字典
dictA = {'a': 1, 'b': 2, 'c': 3}
dictB = {'b': 4, 'c': 5, 'd': 6}
dictC = {'c': 7, 'd': 8, 'e': 9}

# 调用函数找到交叉点和值
cross_points = find_cross_points(dictA, dictB, dictC)

# 打印结果
for key, value in cross_points.items():
    print("交叉点：", key)
    print("对应的值：", value)

交叉点： c
对应的值： [3, 5, 7]