In $8085A$ microprocessor, the operation performed by the instruction $LHLD$ $2100_H$ is
- $(H)\leftarrow 21_H$ , $(L)\leftarrow 00_H$
- $(H)\leftarrow M(2100_H)$ , $(L)\leftarrow M(2101_H)$
- $(H)\leftarrow M(2101_H)$ , $(L)\leftarrow M(2100_H)$
- $(L)\leftarrow 00_H$ , $(H)\leftarrow 21_H$