2. For the following two sub-questions, consider that register r3 holds the value of OxFACEOFF5. Note: you do not need to know what the value of r2 is to answer the question. You may assume it is a valid memory address. a. Assuming you have a little-endian memory system connected to the ARM7TDMI, what would register r4 contain after executing the following instructions? r3, [r2] STR LDRSHr4, [r2] b. Assuming you have a big-endian memory system, what would register r4 contain after executing those same instructions above