Anyone who likes math problems. please help!!!!! i really truly need it..?

The alphabet contains 26 letters, of which 5 are vowels and the rest are consonants. A computer program gives out letters randomly, with every letter equally likely to appear. Which of the following fractions most nearly expresses the probability that a 3 letter "word" created by the computer will be of the form consonant-vowel-consonant? PLEASE SHOW WORK AND EXPLAIN!!! thankyouu :D