Which of the following reagents are suitable for reducing an acyl chloride to an aldehyde?
I. LiAlH4 in ether
II. NaBH4 in tert-butanol
III. LiAlH(t-C4H9O)3 in ether at -78 ºC
IV. H2 and Pd/BaSO4 catalyst
a. III & IV
b. I & IV
c. only I
d. all are suitable
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