Assertion (A) : In `a Delta ABC` if `r_(1)=2r_(2)=3r_(3)` then `a:b=5:4`
Reason (R) : In a `DeltaABC`, if `xr_(1)=yr_(2)=zr_(3)= (x+y+z)` r, then `a:b:c=y+z:z+x:x+y`

Options

A. A is true, r is true and R is correct explanation of A
B. A is true, R is true and R is not correct explanation of A
C. A is tre, R is false
D. A is false, R is true

Answer

A