A Country Produces Bobblehead Dolls and Baseball Bats Using Only

A country produces bobblehead dolls and baseball bats using only labor as input. One unit of labor can produce four dolls or two bats, and the country has 100 units of labor. If the country is operating on its production possibility frontier (PPF) and producing 100 bats, then how many dolls is it producing?

A) 50 dolls
B) 100 dolls
C) 150 dolls
D) 200 dolls