In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Q: Problem: annika hikes at a constant rate of 12 minutes per kilometer . she has hiked 2.75 kilometers east from the start of a hiking trail when she realizes that she has to be back at the start of the trail in 40 minutes . if annika continues east , then turns around and retraces her path to reach the start of the trail in exactly 40 minutes , for how many kilometers total did she hike east ? 
Options: a ) 3.625 , b ) 3.5 , c ) 3 , d ) 3.04 , e ) 4

A: d
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Q: Problem: the length of the longest tape in cm which can be used to measure exactly , the length 7 m ; 3 m 85 cm ; and 12 m 95 cm is : 
Options: a ) 37 , b ) 35 , c ) 34 , d ) 36 , e ) 38

A: b
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Q: Problem: a train running at the speed of 90 km / hr crosses a pole in 15 seconds . what is the length of the train ? 
Options: a ) 325 , b ) 350 , c ) 375 , d ) 400 , e ) 425

A:
c
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