The BCD addition of 910 and 710 will give initial code groups of 1001 + 0111. Addition of these groups generates a carry to the next higher position. The correct solution to this problem would be to:

The BCD addition of 9₁₀ and 7₁₀ will give initial code groups of 1001 + 0111. Addition of these groups generates a carry to the next higher position. The correct solution to this problem would be to:

[A].	ignore the lowest order code group because 0000 is a valid code group and prefix the carry with three zeros
[B].	add 0110 to both code groups to validate the carry from the lowest order code group
[C].	disregard the carry and add 0110 to the lowest order code group
[D].	add 0110 to the lowest order code group because a carry was generated and then prefix the carry with three zeros

Answer: Option D

Explanation:

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The BCD addition of 910 and 710 will give initial code groups of 1001 + 0111. Addition of these groups generates a carry to the next higher position. The correct solution to this problem would be to:

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