please answer this again, previously answered was wrong.

1. The molecule corresponding to H-NMR spectrum A below undergoes a reaction with 1) Hg(OAC)2, H2O and then 2) NaBH4 to produce the compound corresponding to H-NMR spectrum B below. Identify the structures corresponding to A and B, label all their hydrogens (Ha Hb Hc etc...) and then match each to the corresponding signal on the spectrum. (10 marks) Spectrum A 5 1 1 1 10 9 8 7 6 5 4 3 2 1 0 ppm Spectrum B 5 1 1 3 T 1 T T T 1 10 1 7 1 5 T 4 1 3 1 2. 1 1 11 9 8 6 0 ppm