In this task, you need to provide the correct option for a given problem from the provided options.

[Q]: Problem: a shipment of 220 smartphones contains 84 that are defective . if a customer buys two smartphones at random from the shipment , what is the approximate probability that both phones are defective ? 
Options: a ) 1 / 250 , b ) 1 / 84 , c ) 11 / 76 , d ) 1 / 9 , e ) 1 / 3
[A]: c


[Q]: Problem: what number has a 5 : 1 ratio to the number 11 ? 
Options: a ) 22 , b ) 50 , c ) 55 , d ) 52 , e ) 12
[A]: c


[Q]: Problem: find the ratio in which rice at rs . 7.20 a kg be mixed with rice at rs . 5.80 a kg to produce a mixture worth rs . 6.30 a kg ? 
Options: a ) 5 : 9 , b ) 2 : 3 , c ) 3 : 4 , d ) 4 : 5 , e ) none of these
[A]:
a