निम्नलिखित सूची में प्रत्येक अक्षर को एक विशिष्ट संख्या दी गई है: 1: E, 2: R, 3: I, 4: D, 5: V, 6: C, 7: E, 8: E संख्याओं के उस संयोजन का चयन करें जिसे अक्षरों के अनुसार व्यवस्थित करने पर एक सार्थक अंग्रेजी शब्द बनता है।

How many meaningful English words can be formed using the first, fourth, fifth, and eighth letters from the left end of the word 'CONVERSATION', using each letter only once in each word? If no meaningful word can be formed, mark the answer as Y, and if more than three words can be formed, mark the answer as Z. Otherwise, choose the correct answer from the options given below.

If it is possible to make a meaningful 3-letter word with the 3rd, 4th, and 11th letters of the word 'CONTROVERSIAL', what is the middle letter of that word?