Given the task definition and input, reply with output. In this task, you need to provide the correct option for a given problem from the provided options.

Problem: at a certain zoo , the ratio of sea horse to penguins is 5 to 11 . if there are 85 more penguins than sea horses at the zoo , how many sea horses are there ?
Options: a ) 24 , b ) 36 , c ) 48 , d ) 70 , e ) 132
d