options obs=

options obs=max;

data x;
do i=1 to 100;
a=i;
output;
end;
run;

options obs=20;

data a;
set x;
run;

options obs=100;

data b;
set a;
run;

Datasets a and b have ____and ____ observations respectively...

a) 20 20
b) 20 100
c) 100 20
d) 100 100

Check the comments for answers...