Question 16 2 Convert to decimal from 1111 in 2's complement 0 -1 O 15 O Depends on the ISA Question 17 2 When you add an unsigned number to another unsigned number in an 8 bit ISA, you don't need to worry about overflow False. Overflow happens when you carry to the leftmost bit O False. You also need to worry about carry bit. True. No need to worry that for unsigned numbers O False. Overflow only happens when you add 2 positive numbers