Judge the following sentence according to the criteria given below: Oil spills in the ocean are not considered harmful BECAUSE crude oil in seawater at concentrations of 0.7 parts per billion kills or damages certain fish eggs.
The assertion and the reason are both correct, and the reason is valid.
The assertion and the reason are both correct, but the reason is invalid.
The assertion is correct but the reason is incorrect.
The assertion is incorrect but the reason is correct.
Both the assertion and the reason are incorrect.