glish (en) PCLoad PCCIT RegDst RegWrite ALUOP Branch Mom ALUSTC 19 %3D regicter-fila bas 21: rs Zero data-memo 28 rrog1 SregiSrs bsse rt! read-addr. write-addr. rreg2 Sraga Srt ALU addr. PC Instr 37 rd wreg read- bis 1 wdata write-data biso: imm, ALU-control Finish Sign extend 4 Time le bse: imml ALU shift left 2 bso: fn (PC+4) Imm ALU (PC+4) PC+4 The values of control signals needed to execute sw instruction are: Select one: O a. PCLoad=1, RegWrite=1, ALUSrc=0, RegDst-1, Branch=0, MemRead=0, MemWrite= 1, MemtoReg=0 Ob. PCLoad=1, RegWrite=0, ALUSrc=1, RegDst=X Branch-0 MemRead=0. MemWrite=1. MemtoReg=X Dit sc instruction memory MemWrite RegWrite ALU Control MemtoRe opc register-file regi Sregi Srt rreg2 Sreg2 Memory ALU PC address data or Instr. wreg wdata Srt data 3 sign shift- left-2 Imm extend Target shift left-2 immi Determine the total execution time of the sw instruction. ct one: a. 25 ns b. 20 ns c. 16 ns d. 12 ns 56 144 peo ALUResult Instruction Register un ALUResult