Answer some smart questions

1.what is the ideal particle size for delivering into lungs?
a.100 to 200 mm
b.1 to 10 mm
c.5 to 100 mm
d.1 to 5 mm

2.ketamine gel applied to reduce pain in knee joint is  classified as
a.topical delivery system
b.transdermal delivery system
c.both of these
d.none of these