Context: Friday morning I was surprised by Aubrey showing up in my office . She managed to keep this a secret and did n't accidentally tip me off nor did she resort to asking my adviser for a ride from the airport . Instead she figured out the bus system and got to UNC , where she manged to find the correct building ( without knowing the name of the building ) and then found my office buried deep in the basement . That woman is determined .

Question: What would have happened if Aubrey had asked for a ride ?
Options:
0. I would have figured out the bus system
1. None of the above choices .
2. I would have been tipped off
3. Aubrey would not have found my office
Answer: 2

Question: What would have happened if Aubrey had asked for a ride ?
Options:
0. I would have figured out the bus system
1. Aubrey would not have surprised me
2. Aubrey would not have found my office
3. Aubrey would have kept her arrival a secret
Answer: 1

Question: Why did Aubrey keep her visit a secret
Options:
0. She did n't want a ride from the airport
1. She wanted to find my office herself
2. She wanted to figure out the bus system
3. She wanted to surprise me
Answer: 3

Question: Why did Aubrey keep her visit a secret
Options:
0. She wanted to find my office herself
1. She wanted to figure out the bus system
2. She did n't want a ride from the airport
3. She did n't want me to know she was coming
Answer: 3