Answer:
a. The costs of producing a single Blue-ray plaver increases.
Step-by-step explanation:
Supply curve represents a relationship between the the quantity of a good produced and the price of the good.
In this scenario if the cost of input of or other factors of production increases, the supplier will be forced to increase the price of BluRay CDs while reducing the quantity.
The marginal cost increases resulting in an increase in total cost of BluRay.
This is represented by a shift in supply curve to the left