Task: Question Answering
Input (English): In a genetics investigation, students used two red straws to represent male parent DNA. They used two green straws to represent female parent DNA. The offspring in this activity are best represented by  
 (A) either one red straw or one green straw. (B) two green straws. (C) two red straws. (D) one red straw and one green straw.
Output (English): D