Write 860,000,000,000 in scientific notation.  Choose the correct choice from the following answers:  A) 8.6 * 10^11  B) 800.900 * 10^11  C) 8.900 * 10^11  D) 80.9000* 10^11  E) 08.900 * 10^11
a * 10 n , where a is a real number such that 1 * |a| &lt; 10 and n is an integer.   860,000,000,000 = 8.6* 100,000,000,000 = 8.6 * 10 11**   correct answer 8.6 * 10^11
<result>A</result>
Write 860,000,000,000 in scientific notation.