A variable is: an instruction for the compiler a location in memory where a value can be stored a description of a value (such as a number or character) None of the above Which of the following code can get a value from a TextBox txtData and save the value in a Double variable "number""? net Data.'Text = number number = txtData.Text() number = txtData.Text txtData = Convert.ToDouble(number.Text) An assignment statement assigns a value lo a variable True False Programmers often use blank lines and space characters throughout a program to make the program easier to read. True False