A school-aged child is using an insulin pump for their diabetes. Which of the following insulin types can be used in the pump?

Rationale: A. NPH is an intermediate-acting insulin and is not suitable for insulin pumps due to its unpredictable absorption and tendency to clog pump tubing. B. Regular insulin is a short-acting insulin and is commonly used in insulin pumps because it has a predictable onset and duration, allowing for precise dosing. C. Glargine is a long-acting insulin and cannot be delivered via an insulin pump, which requires rapid or short-acting insulins. D. Premixed regular and NPH insulin is not used in pumps due to the combination of insulins with different action profiles and risks of clogging the device.