Answer:
a and b only
Explanation:
Errors can be made in law courts and they can either be harmless, or reversible. When the errors are said to be harmless, it means that when the jury rule in any way, the verdict would not be affected, but when the outcome would be different should the rulings be made in another way, then a reversible error can occur. Misapplication of the law by the judge and the refusal to allow material testimony can cause reversible errors.
