Task: Question Answering
Input (English): Problem: every letter in the alphabet has a number value that is equal to its place in the alphabet . thus , the letter a has a value of 1 , the letter b has a value of 2 , the letter c has a value of 3 , etc . . . the number value of a word is obtained by adding up the value of the letters in the word and then multiplying that sum by the length of the word . what is the number value of the word ` ` dog ' ' ? 
Options: a ) 72 , b ) 75 , c ) 78 , d ) 81 , e ) 84
Output (English): c