Question: The proper precondition for a function that reads data into an array and counts the number of values as they are read is . .

The proper precondition for a function that reads data into an array and counts the number of values as they are read is...
Group of answer choices
// pre: a data file must have been opened
// pre: num[] will be filled with data and count will contain the number of values read
// pre: none
// pre: num[] and count must be initialized
// pre: data is read in from a data file

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