Select all possible TRUE statements.

Question options:

1. The covariance can take any value in the interval between +1 and -1, including the end values +1 or 1
2. If two variables move inoppositedirections, thecovariance and correlationbetween them is positive
3. The correlation is a function of the covariance.
4. The correlation coefficient can take any value in the interval between +1 and -1, including the end values+1 or 1