What privileges are authorized in the US to persons holding an amateur service license granted by the government of Canada?
None, they must obtain a US license
Full privileges of the General class license on the 80-, 40-, 20-, 15-, and 10-meter bands
The operating terms and conditions of the Canadian amateur service license, not to exceed US Amateur Extra class license privileges✓Bonne réponse
Full privileges, up to and including those of the Amateur Extra class license, on the 80-, 40-, 20-, 15-, and 10-meter bands
Explication
Under the reciprocal arrangement a Canadian licensee operating in the United States works to the terms and conditions of the Canadian license, capped at what an FCC Amateur Extra Class license would authorize. The privileges are neither denied outright nor reduced to a fixed list of five bands.