Anu, Beena, Deepa, Heena, Kareena, Leena and Reena sit in a straight line, facing north. Kareena sits third to the right of Beena, who sits second to the right of Deepa. Reena sits to the immediate left of Leena. Anu sits second to the left of Heena. Three of the following four are alike in a certain way based on the given arrangement and thus form a group. Who among the following do NOT belong to that group?​

Given: 

Anu, Beena, Deepa, Heena, Kareena, Leena and Reena sit in a straight line, facing north. 

Kareena sits third to the right of Beena, who sits second to the right of Deepa.

Reena sits to the immediate left of Leena.

Anu sits second to the left of Heena.

Three of the following four are alike in a certain way based on the given arrangement and thus form a group.

Heena and Reena among the following do NOT belong to that group.

Thus, correct option is (b).