Fig A Fig B P 28 P 28 24 MSC 24 - -.... 20 20 S=MC 16 16 S=MC 12 12 8 8 MSB D=MB 4 D=MB 0 0 5 9 13 17 21 25 Q 0 4 8 12 16 20 24 0 09. Which of the following statements are TRUE? O (a) In Figure A the external cost of the 11th unit of the good is $4. O (b) In Figure A the market equilibrium, without considering externalities, would be at Q=13, P=$16. O (c) In Figure B the allocation efficient equilibriums would be at Q=8, P=$10 O (d) In Figure A, the external cost of the 13th unit of the good is $12. O (e) All the above