Correct Option: D

Rajya Sabha is a permanent House and is not subject to dissolution. However, one-third Members of Rajya Sabha retire after every second year. A member who is elected for a full term serves for a period of six years. The election held to fill a vacancy arising otherwise than by retirement of a member on the expiration of his term of office is called ‘Byeelection’. A member elected in a bye-election remains member for the remainder of the term of the member who had resigned or died or disqualified to be member of the House under the Tenth Schedule.