A network engineer reviews the security implications tied to cloud architecture models as the company plans to move data off$-$premises at the end of the year. What model provides flexibility by allowing the company to store sensitive data to a private cloud infrastructure and non$-$sensitive information on a public cloud infrastructure?

a$.$

Hybrid architecture

b$.$

Single$-$tenant architecture

c$.$

Multi$-$tenant architecture

d$.$

Serverless architecture