Which type of output will be created by the program?

Given the data set WORK.BP with the following variable list:

The following SAS program is submitted:

ods select ExtremeObs;

proc univariate data=WORK.BP;

var DIABP;

id PTNO;

run;

Which type of output will be created by the program?
A . a table of the highest and lowest values of DIABP over all observations
B . a table of the highest five and lowest five values of DIABP over all observations
C . a table of the highest and lowest values of DIABP for each level of PTNO
D . a table of the highest five and lowest five values of DIABP for each level of PTNO