Buffer Table

hi

im using table T503T in my program, which is a buffer table and contais Employee Subgroup Names.

in my program im looping a table with 10000 records and i m wonder what is better -

A. in each loop do selec single from T503T

B. select all the records in the beginig of the program to an ITAB and in each loop ill do "read from table itab.... "

Which option is faster ?

thanks Ami