88 of 150 students that went to the zoo

83 of 150 students that went to the park

what is the probability of going to both the park and zoo

The answer choices are: 0.041, 0.239, 0.253, 0.245

I thought I should be able to compute like this:

(88/150)*(83/150) = 7304/22500 = 0.3246

This can be rounded to 0.325, but this doesn't match any of the options, so I must be going about this the wrong way - Any suggestions / help would be appriciated.

Thank You