+ sin xX The electric power p developed in a certain resistor is given by p = 4 3+ COS IX dx, where t is the time. Express p as a function of t. 4 O A. P= = In 3 + sin at 4 O B. p= - - - - In (3 + cos nt) 4 4 O C. P= - 3 + cos it 4 O D. P= = = In (3 + sin nt)