$.$ a$)(3)$ What is the definition of an unaligned memory access?

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b$)(3)$ Assume register $t$0$ contains the value $0$x$400$CD$001.$ Indicate which of the following instructions attempts an unaligned memory access. Indicate $$yes$$ or $$no$$ in each case.

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$$ lw$$ $t$1,3($$t$0)$

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$$ lb$$ $t$1,7($$t$0)$

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$$ sh$$ $t$1,4($$t$0)$