A tech company calculates the correlation coefficient (r) between its monthly marketing spend and its monthly software subscriptions to be +0.85.

Which of the following statements is the most accurate interpretation of this result?

Marketing spend causes 85% of the increase in software subscriptions.

There is a strong positive linear relationship between marketing spend and software subscriptions.

72.25% of software subscriptions are generated by marketing spend.

There is a weak positive linear relationship between the two variables.