The required diagram will be:

Equation of AD:y+7=3−5(x−3)
⇒3y+21=−5x+15
⇒5x+3y+6=0......(i)
Equation of BE:y−2=12−1(x+1)
⇒12y−24=–x−1
⇒x=23−12y....(ii)
by (ii) 115−60y+3y+6=0
⇒57y=121
y=57121,x=23−12×57121
∴9α−6β+60=9×23−108×57121−6×57121+60
=207−242+60=25
Hence this is the required option.