Which of the following statement(s) is/are TRUE while computing $First$ and $Follow$ during top down parsing by a compiler?

Which ONE of the following techniques used in compiler code optimization uses live variable analysis?

Refer to the given $3$-address code sequence. This code sequence is split into basic blocks. The number of basic blocks is . (Answer in integer) !image(https://uadmin.udsfgecw.tech/file/download/public/public:1b57c2a7-7c2b-4572-a838-acc155826e6b.jpg)

Consider the following syntax-directed definition (SDD). image needed to be inserted here Given "MMLK" as the input, which one of the following options is the CORRECT value computed by the SDD (in the attribute $S.val$)?

Consider the following pseudo-code. $$\begin{array}{ll} L1: & t1 = -1 \\ L2: & t2 = 0 \\ L3: & t3 = 0 \\ L4: & t4 = 4 t3 \\ L5: & t5 = 4 t2 \\ L6: & t6 = t5 M \\ L7: & t7 = t4 + t6 \\ L8: & t8 = at7 \\ L9: & \textbf{if } t8 <= max \textbf{ goto } L11 \\ L10: & t1 = t8 \\ L11: & t3 = t3 + 1 \\ L12: & \textbf{if } t3 < M \textbf{ goto } L4 \\ L13: & t2 = t2 + 1 \\ L14: & \textbf{if } t2 < N \textbf{ goto } L3 \\ L15: & max = t1 \end{array}$$ Which one of the following options CORRECTLY specifies the number of basic blocks and the number of instructions in the largest basic block, respectively ?