Consider the first 10 even natural numbers 2,4,6,8,10,12,14,16,18,20as a sequence with nth term a(little n)- (A.) Explain why the numbers are…

Consider the first 10 even natural numbers 2,4,6,8,10,12,14,16,18,20as a sequence with nth term a(little n)- (A.) Explain why the numbers are an arithmetic sequence. How many term does the sequence have? (B.) Determine the value of the first term a1 and common difference d.