$31.$ From the list below, which one is NOT a variant of BYOD $($Bring your own Device$)?$

a$.$

BYOA $($Bring your own Application$)$

b$.$

BYOD $($Bring your own Data$)$

c$.$

BYOC $($Bring your own Cloud$)$

d$.$

BYOT $($Bring your own Technology$)$