An oscillation is superposition of three harmonic oscillations and decribed by the equation `x=A sin 2pi upsilon_(1)` where A changes with time according to `A=A_(0)(1+cos 2pi upsilon_(2)t)` with `A_0` to be constant. The frequencies of pure harmonic oscillations forming this oscillation are

Options

A. `upsilon_(1),upsilon_(2),|upsilon_(1)-upsilon_(2)|`
B. `upsilon_(1),|upsilon_(1)-upsilon_(2)|,upsilon_(1)+upsilon_(2)`
C. `upsilon_(1),upsilon_(2),|upsilon_(2)-upsilon_(1)|`
D. `upsilon_(1),upsilon_(2),upsilon_(1)+upsilon_(2)`

Explanation

To solve the problem, we need to analyze the given equation of oscillation and determine the frequencies of the harmonic oscillations involved.

### Step-by-Step Solution:

1. **Understand the given equations**:
The equation of oscillation is given as:
\[
x = A \sin(2\pi \nu_1 t)
...