How should you create the visualization?

You have a Power BI dataset that contains a table named Temperature Readings. Temperature Readings contains the columns shown in the following table.

The table has 12 million rows. All the columns are needed for analysis.
You need to optimize the dataset to decrease the model size. The solution must not affect the precision of the data.
What should you do?
A. Split the DateTime column into separate date and time columns.
B. Change the data type of the DateTime column to Date.
C. Change the data type of the Latitude column to Fixed Decimal.
D. Disable the Power Query load.

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