help immediatelt please

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 RS, R4 ADDR4, R4, #1 STI R5, C JSR F HALT LD RO, A AND RI, RO, #1 BRnz F RET .FILL X0 .FILL XIF FILL *350F BLKW 3 FILL xFFFF STRINGZ "ABC" FILL x350D END B D E Yantnz: X350C x17 0 YEECE