In a kitchen there are three containers that can hold different quantities of water, as shown in the figure below:

https://api.agilixbuzz.com/Resz/~QNwzDAAAAAwfHv484G1GMA.BguT6Ba2J8XTJpqfJ5dazD/70815624,391,0,0,1E/Assets/Copied/bbba17e5562145d5bd53cf903d4cb4d5/10_20_167.jpg

How many liters of water can the three containers hold in all?

A. 3x

B. x + 3

C. 3x + 1

D. x2 + x − 1