Which statement(s) completed the program and produced a non-missing value for the variable TOTQUANTITY in the final observation of the output data set?

1941 1

The following SAS program is submitted:

data coins;

infile ‘yearamt’;

input year quantity;

<insert statement(s) here>

run;

Which statement(s) completed the program and produced a non-missing value for the variable TOTQUANTITY in the final observation of the output data set?
A . totquantity + quantity;
B. totquantity = sum(totquantity + quantity);
C. retain totquantity; totquantity = totquantity + quantity;
D. retain totquantity0; totquantity = totquantity + quantity;