Question $1(1$ point$)$

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The figure above depicts the binary subtraction $1101001110110.$ If each bi represents the value of borrow in $(1$ if borrow required or $0$ if borrow not required$)$ for the respective column. What are the values of the borrow b$6,$ b$5,$ b$4,$ b$3,$ b$2$ and b$1?$

Question $1$ options:

b$6,$ b$5,$ b$4,$ b$3,$ b$2,$ b$1=110110$

b$6,$ b$5,$ b$4,$ b$3,$ b$2,$ b$1=110111$

b$6,$ b$5,$ b$4,$ b$3,$ b$2,$ b$1=100100$

b$6,$ b$5,$ b$4,$ b$3,$ b$2,$ b$1=010110$