Answer the Question That Follows This SPSS Output

Multiple Choice

Answer the question that follows this SPSS output
 
The frequency table represents the responses of 1980 GSS middle-age adults when asked to identify their social class. Which of the following statements is correct?

A) 98.1% of those who were able to answer the question were in the lower class or working class.
B) 98.1% of those who were able to answer the question were in the middle class.
C) The lower class was the smallest class.
D) Almost everyone was able and willing to answer this question.