Will give brainliest to first person to

why was the convention called for in philadelphia, in may of 1787?

a. it was scheduled so a new president of congress could be elected

b. it was scheduled so the delegates from the 13 states could discuss commerce between the states and other countries.

c. it was specifically called for the purpose of amending the articles of confederation.

d. it was scheduled to elect a new congress and to discuss new laws and issues.

hurry!