$1$b$.(6$ points$)$ Circle the correct answer:

Which of the two graphs below describes the distribution of the different mechanisms of shear transfer in concrete beams with shear reinforcement? Discuss your reasoning.

$($V$\_($cz$)=$ shear carried in the concrete compression zone; V$\_($d$)=$ shear carried by dowel action; V$\_($ay$)=$ vertical component of the shear carried by interface shear transfer; V$\_($s$)=$ shear carried by the shear reinforcement$)$