How would I go about solving this?

multiple answers. Bob's Building Supplies produced $1 million worth of building supplies in 2017. Bob's $350,000 worth of these supplies in 2017 to the Custom Construction Company, which used them to produce model homes worth $2 million in 2017. Bob's sold another $400,000 of these supplies in 2017 directly to homeowners, who undertook their own home improvements. Bob's sold the remaining supplies to Eco-Play Playgrounds, which used them to build $750,000 worth of playgrounds in 2018. How much did the output of Bob's Building Supply contribute to 2017's GDP? C] $650,000, under the Value-Added (aka Production) Approach C] $400,000, under the Spending Approach C] $1,000,000, under the Value-Added (aka Production) Approach C] $650,000, under the Spending Approach C] $400,000, under the Value-Added (aka Production) Approach C] $1,000,000, under the Spending Approach