A pulse is applied to each input of a 2-input NAND gate. One pulse goes HIGH at t = 0 and goes back LOW at t = 1 ms.The other pulse goes HIGH at t = 0.8 ms and goes back LOW at t = 3 ms. The output pulse can be described as follows:

(a) It goes LOW at t = 0 and back HIGH at t = 3 ms.

(b) It goes LOW at t = 0.8 ms and back HIGH at t = 3 ms.

(c) It goes LOW at t = 0.8 ms and back HIGH at t = 1 ms.

(d) It goes LOW at t = 0.8 ms and back LOW at t = 1 ms.