The lengths of the sides of an isosceles triangle are 30, s, and s. If s is an integer, what is the smallest possible perimeter of the triangle?

Select one:
A. 60
B. 61
C. 62
D. 64
E. 90

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?