If Pawan has baseball practice every fourth day in the month of March, starting with March 1, what date will be his last day of practice for the month?
When a glass rod is rubbed with a piece of silk cloth
(A) Both cloth and the rod acquire positive charge
(B) Rod becomes positively charged while the cloth has a negative charge
(C) Rod becomes negatively charged while the cloth has a positive charge
(D) Both cloth and the rod acquire negative charge