A

9

B

12

C

8

D

13

Text Solution

Verified by Experts

The correct Answer is:
B
`(27+18)-(12+13)`
`rArr 45-25=20`
`(16+12)-(6+9)`
`rArr 28-15=13`
`(10+11)-(5+4)`
`rArr21-9=12`
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