In UiPath Studio, you can use DateTime and TimeSpan variables to store and manipulate date and time values. A DateTime variable represents a specific point in time, such as the current date and time, or a date in the past or future. A TimeSpan variable represents a time interval, such as one hour, two days, or three weeks.

To subtract a specific amount of time from the current date using DateTime and TimeSpan variables in VB.NET, you can use the Add method on the DateTime variable and pass a negative TimeSpan value. For example, if you have a DateTime variable called Today that stores the current date and time, and a TimeSpan variable called Span that stores the time interval you want to subtract, you can write:

Today.Add(-Span)

This expression returns a new DateTime value that is the result of subtracting the Span value from the Today value. For example, if Today is 2024-02-08 10:51:49 and Span is 1.02:10:04, then the expression returns 2024-02-07 08:41:45.

The other options are not correct ways of subtracting a TimeSpan value from a DateTime value in VB.NET. Option A is invalid, because you cannot multiply a TimeSpan value by a number. Option B is incorrect, because the Subtract method on the DateTime variable returns a TimeSpan value, not a DateTime value. Option D is incorrect, because the Now property is not a method, and it cannot take a TimeSpan value as an argument.