What is the sum of all two digit numbers? Choose the correct option:
A) 4805	B) 4815	C) 4830	D) 4900	E) 4905
10 + 11 + 12 + 13 + 14 + 15 + - - - - - - - - + 97 + 98 + 99 + 100   Sn = n/2[a + l]   = 90/2[10 + 99]   = 45[109]   = 4905.   4905)
<result>E</result>
What is the sum of all two digit numbers?