Answer:
This should be reported
Step-by-step explanation:
A contingent liability can be described as a liability that likely to be incurred at it depends on the outcome of an uncertain future event.
The condition for reporting a contingent liability is that its contigency must be likely and it is possible to reasonably estimate the amount of the liability.
Since it is indicated in the question that investigation indicates that a product recall is probable, ant it is estimated to cost the company $4 million, it therefore implies that the contigent liability meets the two conditions for it to be reported.