[单选题]View the Exhibit exhibit1 to examine the series of

A The optimizer uses a new plan because none of the plans in the exhibit2 are fixed plans.

B The optimizer uses the plan in the second row of the exhibit2 because it is an accepted plan.

C The optimizer uses the plan in the first row of the exhibit2 because it is the latest generated plan.

D The optimizer uses the plan in the first row of the exhibit2 because OPTIMIZER_MODE was set to FIRST_ROW during its creation.