A firewood supplier has a very seasonal demand for its product. Its transport trucks lay idle during the warmer parts of the year. It can exploit economies of scope if

a$.$It merges with a manufacturer of wooden Christmas ornaments

b$.$It turns into a rental trucking company during the warmer months for other seasonal producers such as ice$-$cream makers

c$.$It starts producing other seasonal products that would sell mostly during the warmer months such as rustic lawn chairs

d$.$B and C