दिए गए विकल्पों में से उस पद का चयन कीजिए जो अंग्रेजी वर्णमाला क्रम के आधार पर निम्नलिखित श्रृंखला में प्रश्न चिह्न (?) को प्रतिस्थापित कर सकता है। GAF, GEF, GIF, GOF, ?

Refer to the following letter series and answer the question that follows. Counting to be done from left to right only. (Left) B G T D F H A K X W E S I C Q M R Y Z O U (Right) How many such vowels are there, each of which is immediately preceded by a consonant and also immediately followed by a vowel?

Which letter will replace the question mark (?) in the given pattern? A D H F I M ? N R