Carmela's house was damaged when Gilbert's private Cessna airplane crashed into it

because Gilbert had run out of gas. After Carmela's homeowners insurer paid for the damage,

the insurer subrogated against Gilbert, who fortunately survived the crash. Who is the

subrogor in this case?

$$

a$.$ Carmela, who suffered the loss and was paid by her homeowners insurer

b$.$ Cessna, who manufactured the airplane

c$.$ Gilbert, who caused the claim

d$.$ The homeowners insurer, who paid the claim