Answer is a) Rugged Devops
Rugged is a software development methodology that characterizes security as a primary consideration throughout the processes of development and delivery of software.
DevSecOps and Rugged DevOps are both vital in an environment where the software development process is expected to be highly efficient and fast paced whereas the security models simply can't keep up.
DevSecOps adds robust security practices and strategies to traditional DevOps practices.
Rugged DevOps emphasizes increased trust, transparency, and a clearer understanding of probable risks.