1.

The macro variables t1-t4 were created. Later they were called in some title statements. What will be displayed for title? "let t1 = SAS; "let t2 = Statistics; %let t3 = STAT 674; Xlet t4 = 2021; Title '&t1. '; title2 't2'; Title3 "&T3. "; title4 "t4."; O nothing, because you need to use double quotation marks. O SAS O t1. O &t1.Three variables are created in the code below. data test; x=2; y= '3Jan1960'd; format y date5.; date1=put (x, date9. ); run; Which of the following is true? O y is not equal to date1 O x is not equal to y O x is equal y O x is not equal to date1