Suppose U= {1,2,3,4,5,6,7,8} is the universal set and P= {1,2,3,4} What is p?

{5,6,7,8}
{1,2,3,4,5,6,7,8}
{1,2,3,4}
Cannot be determined

The set P is defined as {1,2,3,4}.