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'.

[EX Q]: Problem: i flew my tiny seaplane to visit my mother . on the flight up , i flew at 110 mph . on the way home , i flew 90 mph . what was my average speed for the trip ?
Options: a ) 198 mph , b ) 110 mph , c ) 88 mph , d ) 100 mph , e ) 99 mph
[EX A]: d

[EX Q]: Problem: two diagonals of a rhombus are 72 cm and 30 cm respectively . what is its perimeter ?
Options: ['a ) 136 cm', 'b ) 156 cm', 'c ) 144 cm', 'd ) 121 cm', 'e ) 126 cm']
[EX A]: b

[EX Q]: Problem: the food in a camp lasts for 10 men for 50 days . if 10 more men join , how many days will the food last ?
Options: a ) 22 days , b ) 25 days , c ) 50 days , d ) 16 days , e ) 17 days
[EX A]:
b