Time series analysis is a process of a series of connected activities that transform one or more inputs into one or more outputs. All work activities are performed in processes, and forecasting is no exception. Order the activities in the forecasting process from the first one to the last one. Fill in the answer the steps from first to the last in form of letters such as UVKHDT

A$.$ Model selection and fitting

X$.$ Model validation

Z$.$ Monitoring forecasting model performance

M$.$ Problem definition

D$.$ Data collection

B$.$ Forecasting model deployment

H$.$ Data analysis