Question:
Who was the head coach of the team CSM Reșița in Aug, 2021?

Context:
 Dorinel Munteanu is the head coach of CSM Reșița from Jan, 2019 to May, 2020. 
 Dan Alexa is the head coach of CSM Reșița from Jun, 2021 to Dec, 2022. 
 Alexandru Pelici is the head coach of CSM Reșița from Jun, 2020 to Oct, 2020. 
 Adrian Falub is the head coach of CSM Reșița from Mar, 2021 to May, 2021. 
 Alin Minteuan is the head coach of CSM Reșița from Nov, 2020 to Mar, 2021.

Answer:
Dan Alexa