Flower Company Manufactures and Sells a Single Product That Has $\begin{array} {cc } & \text { Contribution margin per unit } & \text { Contribution margin ratio } \\\end{array}$

Flower Company manufactures and sells a single product that has a positive contribution margin. If the selling price and variable costs both decrease by 5% and fixed costs do not change, then what would be the effect on the contribution margin per unit and the contribution margin ratio?
$\begin{array} {cc } & \text { Contribution margin per unit } & \text { Contribution margin ratio } \\\end{array}$
A. $\begin{array} {cc } &&&&& \text { Decrease } &&&&&&&& \text { Decrease } \\\end{array}$
B. $\begin{array} {cc } &&&&& \text { Decrease } &&&&&&&& \text { No change } \\\end{array}$
C. $\begin{array} {cc } &&&&&\text { No change } &&&&&&&& \text { Decrease } \\\end{array}$
D. $\begin{array} {cc} &&&&& \text { No change } &&&&&&&& \text { No change } \\\end{array}$

A) Option A
B) Option B
C) Option C
D) Option D