When the processor is executing in Thumb state, which of the following statements is correct about the values stored in R15?
Bits[31:16] are duplicated with bits[15:0]
The PC value is stored in bits[31:1] and bit[0] is treated as zero
The PC value is stored in bits[31:16] and bits[15:0] are undefined
The PC value is stored in bits[15:0] and bits[31:16] are undefined
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