SSC JE Electrical Engineering 2017 Set 3 Paper

Consider the following pairs,
Event: Time interval (in Seconds)
(1) Period of atomic vibrations: 10${}^{\mathit{–}15}$
(2) Period of radio wave: 10${}^{\mathit{–}6}$
(3) Travel time for light from Sun to Earth: 10${}^6$
(4) Revolution period of the moon: 10${}^{10}$
Which of the above pairs are correctly matched?