Consider a manometer connected as shown in Figure $2.$ Water is flowing in the pipe, but we donot know the direction of the flow. The manometer fluid $($represented in red$)$ relative density isunknown. What can you conclude about the direction of flow based between $(1)$ and $(2)$ if:

a$)$ Density of red fluid $$ density of water

b$)$ Density of red fluid $>$ density of water.

Please answer both parts. Thank you

Figure $2$