What do you know about inventory control

Question: What is true about the inventory carrying cost rate and ordering cost?
a. If ordering cost is high, the inventory carrying cost rate increases
b. A low inventory carrying cost rate means that ordering cost is low
c. The inventory carrying cost rate relates to the cost of keeping an item in stock, such as warehouse space rental and the risk of obsolescence, while ordering cost includes the costs incurred when an order is placed, such as the time spent placing the order and receiving it into the warehouse.