i have 2 questions please help immediately

What is the value stored in register 4 after instruction "LDR R4, R3, #1" is executed? F ORIG x3500 LEA R3, B LDR R4, R3, #1 NOT R5, R4 ADD R4, R4, #1 STI R5, C JSR F HALT LD RO, A AND RI,RO, #1 BRnz F RET .FILL XO FILL XIF FILL X350F .BLKW 3 .FILL XFFFF STRINGZ "ABC" FILL X350D END B A D E What will be printed by the following program? #include int chk(int x, int y, int z); int main(void) { if(chk(10, 15, 15)) printf("%d ", 1); if(chk(15, 10, 15)) printf("%d ", 2); if(chk(20, 15, 10)) printf("%d ", 3); if(chk(10, 15, 20)) printf("%d ", 4); system("pause"); return 0; } int chk(int x, int y, int z) { return x