50

A raw data file is listed below:


----|----10---|----20---|----30
1901 2
1905 1
1910 6
1925 .
1941 1


The following SAS program is submitted and references the raw data file above:


data coins;
infile 'file-specification';
input year quantity;
<insert statement(s) here>
run;


Which one of the following completes the program and produces a non-missing value for the variable TOTQUANTITY in the last observation of the output data set?

A. totquantity + quantity;
B. totquantity = sum(totquantity + quantity);
C. retain totquantity 0;
totquantity = totquantity + quantity;
D. totquantity 0;
sum totquantity;