ccording to a $2019$ study, which of the following is not an accurate statistic about ransomware attacks?

a$.$ Ransomware generates over $$25$ million in revenue for hackers each year.

b$.$ A new organization will fall victim to ransomware every $11$ seconds by $2021.$

c$.34\%$ of businesses hit with malware took a week or more to regain access to their data.

d$.97\%$ of targeted US companies paid a ransom.