Task: Question Answering
Input (English): Problem: how many 4 digit numbers are there , if it is known that the first digit is even , the second is odd , the third is prime , the fourth ( units digit ) is divisible by 3 , and the digit 7 can be used only once ? 
Options: a ) 20 , b ) 150 , c ) 304 , d ) 310 , e ) 320
Output (English): c