If r+(s**10^(6))+(t**10^(12))(r+s+t)**10^(6)3s**10^(9)t**10^(12)(r+s+t)**10^(12)(r+s+t)**10^(18)1, then, of the following, which is closest to r+(s**10^(6))+(t**10^(12)) ?
A (r+s+t)**10^(6)
B 3s**10^(9)
C t**10^(12)
D (r+s+t)**10^(12)
E (r+s+t)**10^(18)
If 1 < r < s < t < 2, then, of the following, which is closest to r + (s * 106) + (t * 1012)?
A (r+s+t)*106 B 3s*109 c t*1012 D (r+ s+t) *1012 E (r+s+t)*1018