【单选题】

Man: Hello. This is Mark Smith. I'm calling to see if my blood test results are in. Woman: Dr. Miller just sent them to the lab last night, so the earliest they could be back tomorrow. Question: What does the woman mean
A．The results might be ready tomorrow.

B．The man needs another test tomorrow.
C．The results were called in last night.
D．The doctor called the lab last night.