The Acme Seed Company charges $2/lb for the first 20 lbs that you buy of marigold seeds each week and $1/lb for every pound you buy thereafter. If your income is $180 per week and you draw a budget constraint using the idea of a composite good with marigold seeds on the X-axis, then the X-intercept of the budget constraint will be:

a.

90

b.

120

c.

150

d.

160