2018 2 marks following group under matrix consider the multiplication: 1 h=01rp, q,r e r 0 1 then the center oi the group is isomorphic to a) (r0},x) (b) (r,+)

2018 2 Marks following group under matrix Consider the multiplication: 1 H=01rp, q,r e R 0 1 Then the center oI the group is isomorphic to a) (R0},x) (b) (R,+) (c) R+) (d) (R,+)x (R\ {0},x) [2020 1 Mark