Artificial Christmas Trees Tend to Be Proportional in Shape

Multiple Choice

Artificial Christmas trees tend to be proportional in shape. If a 4-foot tree needs approximately 60 ornaments to cover the outer limbs of the tree, how many ornaments will a 6-foot tree need?

A) approximately 90 ornaments
B) approximately 120 ornaments
C) approximately 135 ornaments
D) approximately 150 ornaments