Which statement can be used in blank b?
a. <1 and <2 are supplementary.
b. <1 and <2 are a linear pair.
c. <2 and <3 are a linear pair.
d. <2 and <3 are supplementary.
![Which statement can be used in blank b a lt1 and lt2 are supplementary b lt1 and lt2 are a linear pair c lt2 and lt3 are a linear pair d lt2 and lt3 are supplem class=](https://us-static.z-dn.net/files/da6/e66af3615e5f06f1546faf45a5da4d33.png)