Tim is an elementary school art teacher. His students are sculpting a replica of a shark out of clay. Tim has given them one block of clay to make 20 conical shark feeth for the sculpture. The block contains 81 cm³ of clay. If each tooth is solid and has a 2.5 cm base diameter, what is the maximum height each tooth can be? Asume that the students use all the clay.
A. 4.50 cm
B. 2.27 cm
C. 3.57 cm
D. 1.25 cm
E. 2.47 cm