If $y_1$ and $y_2$ are two linearly independent solutions of the differential equation
$\frac{d^2y}{dx^2} + a_1\frac{dy}{dx} +a_2y = 0$ where $a_1$ and $a_2$ are constants.
then y1 and y2 have
A) Odd number of common zeros
B) Exactly one common zero
C) No common zeros
D) At most two common zeros
Plz help me to solve this problem.