Classify the following ecosystems into their appropriate groups:
$I-$ Forest,$II-$ Grassland,$III-$ Pond,$IV-$ Desert
$V-$ Lake,$VI-$ Wetland,$VII-$ River,$VIII-$ Estuary
Terrestrial Ecosystem $\quad$ Aquatic Ecosystem

• A
  $I, II, IV$ and $III, V, VI, VII, VIII$
• B
  $I, II$ and $III, IV, V, VI, VII, VIII$
• C
  $I, II, VIII$ and $III, IV, V, VI, VII$
• D
  $I, II, IV, VIII$ and $III, V, VI, VII$