Which of the following is NOT true ?

Excitations like light or applied voltage can change the number of mobile charge carriers in a semiconductor. Solid state electronics is advantageous because of it is economical. Si and Ge are elemental semiconductors. Anthracene is a semiconductor.

Solid state electronics is advantageous because of it is economical.

Solid state electronics is advantageous because it is small in size, consume low power, operate at low voltages, have long life and high reliability.