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What value is stored in register $t0 after the MIPS code below executes? Note: Assume the values 10 and 2 are stored in registers $t0 and $t1, respectively. add $t0,$t0,$t1 add $t0,$t0, $t1 add $8, $t1, $zero O2 0 12 O 10 O 14 What is the purpose of the $vo register? Store the address of next instruction to perform after a procedure call Keeps track of the next instruction to execute None of the answers are correct Store the result of an expression or procedure