Write a Differential Equation Describing the Given Situation $\frac { d Q } { d t } = 0.03 Q$

Multiple Choice

Write a differential equation describing the given situation.Define all variables you introduce.(Do not try to solve the differential equation at this time.) An investment grows at a rate of 3% of its size.

A) Let Q denote the investment and let t denote time; $\frac { d Q } { d t } = 0.03 Q$
B) Let Q denote the investment and let t denote time; $\frac { d Q } { d t } = 0.03 t$
C) Let Q denote the investment and let t denote time; $\frac { d Q } { d t } = 0.3 Q$
D) Let Q denote the investment and let t denote time; $\frac { d Q } { d t } = 3 Q$