What should you deploy?

You are configuring a production environment for an Azure IoT solution.

You plan to deploy 1,000 IoT devices. Each device will send one device-to-cloud message every hour. Each message will be 4 KB.

You need to deploy an Azure IoT hub that will support the IoT device deployment.

The solution must meet the following requirements:

✑ Perform bulk device operations such as creating multiple device identities.

✑ Minimize costs

What should you deploy?
A . one unit of the B1 tier
B . one unit of the free tier
C . one unit of the S1 tier
D . one unit of the S2 tier