Consider a processor implementing Tomasulo's algorithm with a reorder buffer $($ROB$)$ and speculative execution enabled. The processor supports branch prediction and has a single common data bus $($CDB$)$ for broadcasting results. Assume no structural hazards, and all instructions except branches are issued and executed without delays.

Given the following instruction sequence:

A$1$: BEQ R$1,$ R$2,$ Label

A$2$: ADD R$3,$ R$4,$ R$5$

A$3$: MUL R$6,$ R$7,$ R$8$

Label: SUB R$9,$ R$10,$ R$11$

Which of the following describes the correct behavior if the branch prediction for A$1$ is incorrect?

Question $9$ options:

Instructions A$2$ and A$3$ will execute but not commit, and their results will be discarded once the branch misprediction is detected.

Instructions A$2$ and A$3$ will not issue until the branch outcome is resolved, ensuring that control dependence is preserved.

A$2$ and A$3$ will commit their results, as Tomasulo's algorithm resolves data dependencies using the reservation station.

Instructions after the branch will not execute at all, as Tomasulo's algorithm only supports in$-$order execution when branches are involved.$$