$1.$ You are the security officer for a small cloud provider offering public cloud infrastructure as a ser$-$vice $($IaaS$)$; your clients are predominantly from the education sector, located in North America. Of the following technology architecture traits, which is probably the one your organization would most likely want to focus on and why? Explain in brief.

a$.$ Reducing mean time to repair $($MTTR$)$

b$.$ Reducing mean time between failure $($MTBF$)$

c$.$ Reducing the recovery time objective $($RTO$)$

d$.$ Automating service enablement