Hello I have an economics math question and have provided the question via image. I need help with

In the table given below Y represents the aggregate expenditure of the economy on C = consumption, 1 = investment, G = government projects, and X = net exports. Table 9.3 Aggregate Expenditures Y C I 'G X $0 $50 $75 $1 50 $40 $150 $125 $75 $150 $10 $300 $200 $75 $150 -$20 $450 $275 $75 $150 $ 50 $600 $350 $75 $150 -$80 Refer to Table 9.3. Calculate the marginal propensity to consume in the economy. 0 a. 0.25 O b. 0.50 O c. 0.75 0 d 0.80 0 e. 1.25