Task: Question Answering
Input (English): Problem: we invested a total of $ 1,000 . we invested one part of the money at 4 % and the rest of the money at 6 % . the total investment with interest at the end of the year was $ 1,046 . how much money did we invest at 4 % ? 
Options: a ) $ 600 , b ) $ 650 , c ) $ 700 , d ) $ 750 , e ) $ 800
Output (English): c