How many distinguishable rearrangements of the letters in CONTEST have both the vowels first? (For instance, OETCNST is a one such arrangements but OTETSNC is not.)
<spanclass=′latex−bold′>(A)</span>60<spanclass=′latex−bold′>(B)</span>120<spanclass=′latex−bold′>(C)</span>240<spanclass=′latex−bold′>(D)</span>720<spanclass=′latex−bold′>(E)</span>2520