A nail has a pointed tip while its head is broad. Which one of the following best explains this design choice?
(a) The pointed tip reduces pressure to allow easy penetration, while the broad head increases pressure for hammering.
(b) The pointed tip increases force by concentrating mass, and the broad head decreases force to protect the hammer.
(c) The pointed tip increases pressure to allow easy penetration, whereas the broad head reduces pressure so that hammer blows do not damage it.
(d) Both the pointed tip and the broad head increase pressure to transfer the maximum possible force from the hammer.