Stock$-$It$,$ a business that sells inventory tracking software sends its customers quarterly marketing emails about new product features. Stock$-$It then groups customers according to whether they open the email and assigns their customer support to follow up with those who did not open the email. This is an example of which business$-$to$-$business segmentation method?

Value$-$based segmentation

Technographic segmentation

Needs$-$based segmentation

Behavioral segmentation