The Populations of 4 Species of Animals Are Given by the Following

Multiple Choice

The populations of 4 species of animals are given by the following equations:
$P_{1}=650(0.71) ^{t} P_{2}=600(1.2) ^{t} P_{3}=270(0.88) ^{t} P_{4}=610(1.05) ^{t}$
Which species are shrinking in size?

A) $P_{4}$
B) $P_{3}$
C) $P_{2}$
D) $P_{1}$