Suppose R = {1, 3, 5, 7, 9, 11, 13, 15, 17} and D = {3, 6, 9, 12, 15, 18, 21, 24, 27}. What is upper R intersection upper D?
(1 point)
Responses
{3, 9, 15}
{3, 9, 15}
{1, 5, 7, 11, 13, 17}
{1, 5, 7, 11, 13, 17}
{1, 3, 5, 6, 7, 9, 11, 12, 1