Match the following

a. Continuous easement	1. A right of way annexed to A's house over B's land.
b. Non-apparent easement	2. Rights annexed to A's land to lead water thither across B's land by an aqueduct and to draw off water thence by a drain. The drain would be discovered upon careful inspection by a person conversant with such maters.
c. Discontinous easement	3. A right annexed to easement B's house to receive light by the windows without obstruction by his neighbour A.
d. Apparent easement	4. A right annexed to easement A's house to prevent B from building on his own land.