Subquery returned more than 1 value This is not permitted ??

Question

i am copying 2 column from a source table to target.

 

issue is when i selecting 2 column values and and trying to inserting to target table, i am getting below error.any idea?

 

Msg 512, Level 16, State 1, Line 27

Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

 

INSERT INTO destinationtable(firstname,lastname,age,school)

SELECT

(SELECT sourcetable.firstname From sourcetable),

(SELECT sourcetable.lastname From sourcetable),19,UP school