The letters of the word MATRICULATION are cut and put into a box. One letter is drawn at random from the box. Find the probability of drawing a vowel

A.
(frac{7}{13}) 
B.
(frac{5}{13}) 
C.
(frac{6}{13}) 
D.
(frac{8}{13}) 
E.
(frac{4}{13})
Correct Answer: Option C
Explanation
Vowels of letters are 6 in numbers
prob. of vowel = (frac{6}{13})