If_‚Äö√Ñ√∂‚à ö√ë‚à ö‚â§n‚Äö√Ñ√∂‚à ö√ë‚à ö¬•_denotes_the_number_of_rows_that_are_to_be_refreshed_in_a_single_refresh_interval,_‚Äö√Ñ√∂‚à ö√ë‚à ö‚â§td‚Äö√Ñ√∂‚à ö√ë‚à ö¬•_denotes_the_range_of_time_it_may_take_then,_refresh_time_(tr)_can_be_defined_as$#

• A. n*td
• B. td/n
• C. n/td
• D. tdⁿ