If You Could Design a Modified Version of the Enzyme

Multiple Choice

If you could design a modified version of the enzyme to ensure that it would function optimally in the harsh conditions of the washing vat (such as high temperature or high pH) , which of the following could you do to achieve this goal?

A) Add more amino acids to the end of the protein to make it more hydrophobic.
B) Change the amino acid sequence slightly to ensure a more stable tertiary structure.
C) Remove some amino acids from the start of the protein to strengthen its secondary structure.
D) Change the amino acid sequence drastically to give the enzyme quaternary structure.