One bag of flour is sold for $1.00 to a bakery, which uses the our to bake bread that is sold for $3.00 to consumers. A second bag of flour is sold for $1 to a grocery store who sells it to a consumer for $2.00. Taking these four transactions into account, what is the effect on GDP? a. GDP increases by $3.00. 8 b. GDP increases by $5.00. c. GDP increases by $6.00 d. GDP increases by $7.00