Two identical centrifugal pumps are connected in parallel to a common delivery pipe of a system. The discharge performance curve of each of the pumps is represented by H = 30 – 80Q2. The discharge-head equation of the parallel duplex pump set is

• A. H = 30 – 80Q2
• B. H = 15 – 20Q2
• C. H = 30 – 20Q2
• D. H = 15 – 80Q2