Ascent of sap is due to which force?

Given below are two statements.
Statement $I$ - Presence of capillary water is essential.
Statement $II$ - High concentration of solutes in soil water reduces the rate of absorption of water.
In the light of the above statements,select the correct option given below:

Which is the main pathway for water transport in angiosperms?

Keep some freshly cut flowers in a solution of food colour. Wait for some time for the colour to rise in the flower. When the stem of the flower is held up to the light,coloured strands can be seen inside. Can this experiment demonstrate which tissue is conducting water up the stem?

$A$ : Root pressure is dynamic and is always a positive hydrostatic pressure.
$R$ : It is a universal phenomenon and develops under absorption lag.

Which one of the following is the most accepted theory of ascent of sap?