9. BOLASHAK SCHOOL To lower the electricity costs. you need to turn off the air con- ditionings that you use before leaving the blocks A) You need to lock all the air condition- ings before leaving the blocks, B) Keep the air conditionings turned off all the time to reduce the electricity costs C) Save us money by switching off the air conditionings after the classes D) To lower the electricity costs please turn the air conditionings to the right​