题目内容：
请根据下面短文回答第题： Yesterday, John went for a bus ride to the countryside．The bus was not full and he had a good seat at the front.
For about an hour they were on the freeway(高速公路)．Then, they turned off and drove along a narrow (狭窄的) country road．Soon the road began to climb．They left several villages behind and came to a forest．There was very little sunlight and it was quite dark.
When they got to the top of the hill, the driver parked the bus．They all got out．It was very cold．John wanted to go for a walk, but the bus driver said it looked like rain．He wanted to leave before the rain came.
When they were halfway down the hill, John remembered something．On the way up the hill there had been an old lady sitting behind him．She wasn't sitting there now．He looked round the bus．There wasn't any old lady on the bus anywhere.
John told the driver about her．The driver had to turn the bus around and go up the hill again．When they got to the top, the old lady was waiting in the rain for the bus．She thanked John for re-membering her.
Where did John sit on the bus on the way up the hill? A．In front of an old lady.
B．Behind an old lady.
C．Beside an old lady.
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