Table 2-5 Lumber (per board One Cell Phone foot) Estonia 40 hours 8 hours Finland 16 hours 4 hours Table 2-5 shows the number of labor hours required to produce a cell phone and a board foot of lumber in Estonia and Finland. Refer to Table 2-5. What is Finland's opportunity cost of producing one cell phone? O 0.25 board feet of lumber O 4 board feet of lumber O 12 board feet of lumber O 16 board feet of lumber