1.Which of the following represents a pair of covalent hydrides?a.CsHCsHCsH, KHKHKHb.KHKHKH, NaHNaHNaHc.H2SH_2SH2S, HFHFHFd.AlH3AlH_3AlH3, LiHLiHLiHLogin to continueOnly logged in users canattempt or see the solution.