Jefferson Middle School has the same number of boys and girls. Three-fourths of the girls and two-thirds of the boys went on a field trip. What fraction of the students were girls?<spanclass=′latex−bold′>(A)</span>21<spanclass=′latex−bold′>(B)</span>179<spanclass=′latex−bold′>(C)</span>137<spanclass=′latex−bold′>(D)</span>32<spanclass=′latex−bold′>(E)</span>1514