Large process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials like stainless steel, aluminium, nickel & its alloys, copper & its alloys and titanium. The cladding thickness is generally about __________ percent of the total thickness.

A. 1 to 5

B. 10 to 20

C. 30 to 40

D. 40 to 50

Answer: Option B