10. R&D DRUG Co data supplied as follows -

$ millions	2022	2021	2019
Total Revenue	49,005	48,005	48,950
R & D expense	4,864	4, 222	3,999
New patents awarded by year	2,433	1,986	2,222

A, What is the R&D cost per patent for each year? ______, _______, ________

B. Compute DRUG Cos common size R&D expense for each year. What trend do you observe?

C. What, if anything, do you conclude from this data? And, what more data would you like to have in order to determine If DRUG Co is successfully developing new products?