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c) A chemist discovered four bottles of liquid simply labelled A-D, each of which contained a different pure organic compound. The compounds were known to be heptan-1-ol, heptanal, heptane and heptene. The chemist put a sample from each bottle through Infrared Spectroscopy and recorded the results below in Table 1. i) Use the information in the data table (Table 2) to suggest which compound is in which bottle. ii) For each compound briefly justify your conclusion. Table 1 Infrared Spectroscopic Results for unknown samples Table 2 vvavenumber data for difterent bonds between atoms