a or the

choose the correct answer:
there’s. . . .car.Mike’s come back.I must go and bathe my eyes. I don’t want him to see I’ve been crying.
a)a
b)the
please with explainations!
thanks in advance

[color=blue]“the” is the correct answer, because it is the specific car that tells us that it is Mike who has arrived. [not just (a)(any) car]