What is the output of code segment given below? river =7 length = len(river ) first ="Mi" last = "pi" length = len(last) river = first + "ssi" + last print(first) print(length ) print(last) print(river) For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). Click Sate and Submit to save and submit. Click Save All Answers to