In this task, you need to provide the correct option for a given problem from the provided options.
--------
Question: Problem: of the 55 cars on a car lot , 40 have air - conditioning , 25 have power windows , and 12 have both air - conditioning and power windows . how many of the cars on the lot have neither air - conditioning nor power windows ?
Options: a ) 15 , b ) 8 , c ) 10 , d ) 2 , e ) 18

Answer: d

Question: Problem: 9 log 9 ( 7 ) = ?
Options: a ) 1 , b ) 2 , c ) 7 , d ) 4 , e ) 5

Answer: c

Question: Problem: the cost of 3 pens and 5 pencils is rs . 260 . also the cost of one pen and one pencil is in the ratio of 5 : 1 respectively . what is the cost of one dozen pens ?
Options: a ) rs . 200 , b ) rs . 250 , c ) rs . 300 , d ) rs . 780 , e ) none of these

Answer:
d