A population of deer triples every 5 years. In 2010, there were 35 deer. Which of the following gives the number of decay years after 2010?
a) N(t)=35×3ᵗ/⁵
b) N(t)=35×3ᵗ
c) N(t)=35−3t
d) N(t)=35−3ᵗ/⁵