What was the difference between the ironclads, the monitor, and the merrimac?

a)-the merrimac included a revolving gun turret.
b)-the monitor included a revolving gun turret.
c)-they were the same, designed and built by the same company.
d)-the monitor included multiple stations along both sides for rapid fire exchanges.

its c

Explanation:

the correct answer of the given question above would be the first option. it is important to know a currency's exchange rate when you are planning for the expenses for an overseas trip. when you are overseas, the money you will be using should be exchanged for the currency depending on where you travel and currency changes from time to time and differs from country to country so it is necessary to know the rate beforehand. hope this answer .

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answer; (a) he was a u.s senator for 38 years;