need a detailed explanation of this assembly code. Also how do we choose LDR r1, = A LDR r2, =B LDR r3, =C ?

Suppose the data memory starts at the address ex20808000 AREA myData, DATA, READWRITE DCD 8x12345678 DCD 0x44332211 DCD 8x11223344 Assume little endian is used. Complete the following table to show the content of the data memory 0x20800eaD 0x2080aeac 0x20800088 ex2000008A ex20800e09 0x20a0008 0x20000007 0x20000806 ex2008e8e5 ex28006864 8x20000063 0x20000002 ex20080001 0x20000000 Gx1l 6x22 Gx33 9x44 Sx44 8y33 9x22 6x11 9x12 x34 Sx56 9x78 Write an assembly program that load value of A and B from the memory, add them, set the NZCV flags, and write the sum to memory location C. Suppose the data memory starts at the address ex20808000 AREA myData, DATA, READWRITE DCD 8x12345678 DCD 0x44332211 DCD 8x11223344 Assume little endian is used. Complete the following table to show the content of the data memory 0x20800eaD 0x2080aeac 0x20800088 ex2000008A ex20800e09 0x20a0008 0x20000007 0x20000806 ex2008e8e5 ex28006864 8x20000063 0x20000002 ex20080001 0x20000000 Gx1l 6x22 Gx33 9x44 Sx44 8y33 9x22 6x11 9x12 x34 Sx56 9x78 Write an assembly program that load value of A and B from the memory, add them, set the NZCV flags, and write the sum to memory location C